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3131030131 = 17673118839
BaseRepresentation
bin1011101010011111…
…1011101001110011
322002012120210212221
42322213323221303
522403020431011
61234404501511
7140406213505
oct27247735163
98065523787
103131030131
111367426309
127346aa897
133ab8a0b68
14219b93d75
15134d27971
hexba9fba73

3131030131 has 16 divisors (see below), whose sum is σ = 3375889920. Its totient is φ = 2893207680.

The previous prime is 3131030107. The next prime is 3131030137. The reversal of 3131030131 is 1310301313.

It is a cyclic number.

It is not a de Polignac number, because 3131030131 - 219 = 3130505843 is a prime.

It is a super-2 number, since 2×31310301312 = 19606699362459754322, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 349810 + ... + 358648.

It is an arithmetic number, because the mean of its divisors is an integer number (210993120).

Almost surely, 23131030131 is an apocalyptic number.

3131030131 is a deficient number, since it is larger than the sum of its proper divisors (244859789).

3131030131 is a wasteful number, since it uses less digits than its factorization.

3131030131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9234.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 3131030131 is about 55955.6085750124. The cubic root of 3131030131 is about 1462.9486494193.

Adding to 3131030131 its reverse (1310301313), we get a palindrome (4441331444).

It can be divided in two parts, 3 and 131030131, that multiplied together give a palindrome (393090393).

The spelling of 3131030131 in words is "three billion, one hundred thirty-one million, thirty thousand, one hundred thirty-one".

Divisors: 1 17 67 311 1139 5287 8839 20837 150263 354229 592213 2748929 10067621 46731793 184178243 3131030131