203131012 has 12 divisors (see below), whose sum is σ = 406262080. Its totient is φ = 87056136.

The previous prime is 203130979. The next prime is 203131043. The reversal of 203131012 is 210131302.

203131012 is an admirable number.

It is a super-2 number, since 2×203131012² = 82524416072288288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203130983 and 203131001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3627312 + ... + 3627367.

Almost surely, 2^203131012 is an apocalyptic number.

It is an amenable number.

203131012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

203131012 is a wasteful number, since it uses less digits than its factorization.

203131012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7254690 (or 7254688 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 203131012 is about 14252.4037270911. The cubic root of 203131012 is about 587.8394713495.

Adding to 203131012 its reverse (210131302), we get a palindrome (413262314).

The spelling of 203131012 in words is "two hundred three million, one hundred thirty-one thousand, twelve".