31021454102 has 16 divisors (see below), whose sum is σ = 48588841440. Its totient is φ = 14826104832.

The previous prime is 31021454053. The next prime is 31021454117. The reversal of 31021454102 is 20145412013.

It is a super-2 number, since 2×31021454102² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165227 + ... + 298902.

It is an arithmetic number, because the mean of its divisors is an integer number (3036802590).

Almost surely, 2^31021454102 is an apocalyptic number.

31021454102 is a deficient number, since it is larger than the sum of its proper divisors (17567387338).

31021454102 is a wasteful number, since it uses less digits than its factorization.

31021454102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465607.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 31021454102 its reverse (20145412013), we get a palindrome (51166866115).

The spelling of 31021454102 in words is "thirty-one billion, twenty-one million, four hundred fifty-four thousand, one hundred two".