31400102031 has 32 divisors (see below), whose sum is σ = 46337510400. Its totient is φ = 18833834880.

The previous prime is 31400102029. The next prime is 31400102047. The reversal of 31400102031 is 13020100413.

It is not a de Polignac number, because 31400102031 - 2¹ = 31400102029 is a prime.

It is a super-2 number, since 2×31400102031² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31400102031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400102081) 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, 54871 + ... + 256536.

It is an arithmetic number, because the mean of its divisors is an integer number (1448047200).

Almost surely, 2^31400102031 is an apocalyptic number.

31400102031 is a deficient number, since it is larger than the sum of its proper divisors (14937408369).

31400102031 is a wasteful number, since it uses less digits than its factorization.

31400102031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311519.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31400102031 its reverse (13020100413), we get a palindrome (44420202444).

The spelling of 31400102031 in words is "thirty-one billion, four hundred million, one hundred two thousand, thirty-one".