42503000031 has 12 divisors (see below), whose sum is σ = 61402388008. Its totient is φ = 28331103024.

The previous prime is 42502999961. The next prime is 42503000063. The reversal of 42503000031 is 13000030524.

It is not a de Polignac number, because 42503000031 - 2⁹ = 42502999519 is a prime.

It is a super-2 number, since 2×42503000031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42502999968 and 42503000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42503000131) 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, 288280 + ... + 410013.

Almost surely, 2^42503000031 is an apocalyptic number.

42503000031 is a deficient number, since it is larger than the sum of its proper divisors (18899387977).

42503000031 is a wasteful number, since it uses less digits than its factorization.

42503000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705062 (or 705059 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 42503000031 its reverse (13000030524), we get a palindrome (55503030555).

The spelling of 42503000031 in words is "forty-two billion, five hundred three million, thirty-one", and thus it is an aban number.