203112431031 has 32 divisors (see below), whose sum is σ = 293075504640. Its totient is φ = 124686221184.

The previous prime is 203112431021. The next prime is 203112431051. The reversal of 203112431031 is 130134211302.

It is not a de Polignac number, because 203112431031 - 2⁶ = 203112430967 is a prime.

It is a super-2 number, since 2×203112431031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203112430989 and 203112431007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203112431021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2024161 + ... + 2122133.

It is an arithmetic number, because the mean of its divisors is an integer number (9158609520).

Almost surely, 2^203112431031 is an apocalyptic number.

203112431031 is a deficient number, since it is larger than the sum of its proper divisors (89963073609).

203112431031 is a wasteful number, since it uses less digits than its factorization.

203112431031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99015.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 203112431031 its reverse (130134211302), we get a palindrome (333246642333).

The spelling of 203112431031 in words is "two hundred three billion, one hundred twelve million, four hundred thirty-one thousand, thirty-one".