31231012011003 has 48 divisors (see below), whose sum is σ = 52385838925056. Its totient is φ = 17561193595200.

The previous prime is 31231012010941. The next prime is 31231012011049. The reversal of 31231012011003 is 30011021013213.

It is not a de Polignac number, because 31231012011003 - 2²² = 31231007816699 is a prime.

It is a super-2 number, since 2×31231012011003² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31231012011083) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14018725 + ... + 16093062.

It is an arithmetic number, because the mean of its divisors is an integer number (1091371644272).

Almost surely, 2^{31231012011003} is an apocalyptic number.

31231012011003 is a deficient number, since it is larger than the sum of its proper divisors (21154826914053).

31231012011003 is a wasteful number, since it uses less digits than its factorization.

31231012011003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30112064 (or 30112061 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31231012011003 its reverse (30011021013213), we get a palindrome (61242033024216).

The spelling of 31231012011003 in words is "thirty-one trillion, two hundred thirty-one billion, twelve million, eleven thousand, three".