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3131030130 = 235104367671
BaseRepresentation
bin1011101010011111…
…1011101001110010
322002012120210212220
42322213323221302
522403020431010
61234404501510
7140406213504
oct27247735162
98065523786
103131030130
111367426308
127346aa896
133ab8a0b67
14219b93d74
15134d27970
hexba9fba72

3131030130 has 16 divisors (see below), whose sum is σ = 7514472384. Its totient is φ = 834941360.

The previous prime is 3131030107. The next prime is 3131030137. The reversal of 3131030130 is 310301313.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (3131030137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52183806 + ... + 52183865.

It is an arithmetic number, because the mean of its divisors is an integer number (469654524).

Almost surely, 23131030130 is an apocalyptic number.

3131030130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3131030130 is an abundant number, since it is smaller than the sum of its proper divisors (4383442254).

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

3131030130 is a wasteful number, since it uses less digits than its factorization.

3131030130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104367681.

The product of its (nonzero) digits is 81, while the sum is 15.

The square root of 3131030130 is about 55955.6085660767. The cubic root of 3131030130 is about 1462.9486492636.

Adding to 3131030130 its reverse (310301313), we get a palindrome (3441331443).

The spelling of 3131030130 in words is "three billion, one hundred thirty-one million, thirty thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 104367671 208735342 313103013 521838355 626206026 1043676710 1565515065 3131030130