403131012 has 12 divisors (see below), whose sum is σ = 940639056. Its totient is φ = 134377000.

The previous prime is 403130993. The next prime is 403131017. The reversal of 403131012 is 210131304.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×403131012² = 325029225672288288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 403130982 and 403131000.

It is not an unprimeable number, because it can be changed into a prime (403131017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16797114 + ... + 16797137.

It is an arithmetic number, because the mean of its divisors is an integer number (78386588).

Almost surely, 2^403131012 is an apocalyptic number.

It is an amenable number.

403131012 is an abundant number, since it is smaller than the sum of its proper divisors (537508044).

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

403131012 is a wasteful number, since it uses less digits than its factorization.

403131012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33594258 (or 33594256 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 403131012 is about 20078.1227210115. The cubic root of 403131012 is about 738.7237632008.

Adding to 403131012 its reverse (210131304), we get a palindrome (613262316).

The spelling of 403131012 in words is "four hundred three million, one hundred thirty-one thousand, twelve".