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3131020130 = 257223367757
BaseRepresentation
bin1011101010011111…
…1001001101100010
322002012120022011112
42322213321031202
522403020121010
61234404343322
7140406142400
oct27247711542
98065508145
103131020130
111367419847
127346a4b42
133ab899444
14219b90470
15134d24a05
hexba9f9362

3131020130 has 96 divisors (see below), whose sum is σ = 6868717056. Its totient is φ = 1022668416.

The previous prime is 3131020121. The next prime is 3131020141. The reversal of 3131020130 is 310201313.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4135712 + ... + 4136468.

It is an arithmetic number, because the mean of its divisors is an integer number (71549136).

Almost surely, 23131020130 is an apocalyptic number.

3131020130 is an abundant number, since it is smaller than the sum of its proper divisors (3737696926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131020130 is a wasteful number, since it uses less digits than its factorization.

3131020130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 3131020130 is about 55955.5192094578. The cubic root of 3131020130 is about 1462.9470917887.

Adding to 3131020130 its reverse (310201313), we get a palindrome (3441221443).

The spelling of 3131020130 in words is "three billion, one hundred thirty-one million, twenty thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 23 35 46 49 70 98 115 161 230 245 322 367 490 734 757 805 1127 1514 1610 1835 2254 2569 3670 3785 5138 5299 5635 7570 8441 10598 11270 12845 16882 17411 17983 25690 26495 34822 35966 37093 42205 52990 59087 74186 84410 87055 89915 118174 121877 174110 179830 185465 243754 277819 295435 370930 413609 555638 590870 609385 827218 853139 1218770 1389095 1706278 1944733 2068045 2778190 3889466 4136090 4265695 6389837 8531390 9723665 12779674 13613131 19447330 27226262 31949185 44728859 63898370 68065655 89457718 136131310 223644295 313102013 447288590 626204026 1565510065 3131020130