31002101031 has 12 divisors (see below), whose sum is σ = 45435586616. Its totient is φ = 18789151920.

The previous prime is 31002101027. The next prime is 31002101063. The reversal of 31002101031 is 13010120013.

It is not a de Polignac number, because 31002101031 - 2² = 31002101027 is a prime.

It is a super-2 number, since 2×31002101031² (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 = 31002100998 and 31002101016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31002101021) 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, 42702256 + ... + 42702981.

Almost surely, 2^31002101031 is an apocalyptic number.

31002101031 is a deficient number, since it is larger than the sum of its proper divisors (14433485585).

31002101031 is a wasteful number, since it uses less digits than its factorization.

31002101031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85405262 (or 85405251 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 31002101031 its reverse (13010120013), we get a palindrome (44012221044).

The spelling of 31002101031 in words is "thirty-one billion, two million, one hundred one thousand, thirty-one".