403131013 has 6 divisors (see below), whose sum is σ = 428239826. Its totient is φ = 379417152.

The previous prime is 403130993. The next prime is 403131017. The reversal of 403131013 is 310131304.

It can be written as a sum of positive squares in 3 ways, for example, as 274830084 + 128300929 = 16578^2 + 11327^2 .

It is not a de Polignac number, because 403131013 - 2⁹ = 403130501 is a prime.

It is a super-2 number, since 2×403131013² = 325029227284812338, which contains 22 as substring.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 697170 + ... + 697747.

Almost surely, 2^403131013 is an apocalyptic number.

It is an amenable number.

403131013 is a deficient number, since it is larger than the sum of its proper divisors (25108813).

403131013 is a wasteful number, since it uses less digits than its factorization.

403131013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394951 (or 1394934 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 403131013 is about 20078.1227459143. The cubic root of 403131013 is about 738.7237638116.

Adding to 403131013 its reverse (310131304), we get a palindrome (713262317).

The spelling of 403131013 in words is "four hundred three million, one hundred thirty-one thousand, thirteen".