131004012 has 36 divisors (see below), whose sum is σ = 322621656. Its totient is φ = 41368320.

The previous prime is 131004011. The next prime is 131004037. The reversal of 131004012 is 210400131.

It is a happy number.

It is a super-2 number, since 2×131004012² = 34324102320192288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (131004011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10789 + ... + 19452.

Almost surely, 2^131004012 is an apocalyptic number.

131004012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131004012 is an abundant number, since it is smaller than the sum of its proper divisors (191617644).

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

131004012 is a wasteful number, since it uses less digits than its factorization.

131004012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30286 (or 30265 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 131004012 is about 11445.6984059515. The cubic root of 131004012 is about 507.8804924823.

Adding to 131004012 its reverse (210400131), we get a palindrome (341404143).

The spelling of 131004012 in words is "one hundred thirty-one million, four thousand, twelve".