31022120103 has 16 divisors (see below), whose sum is σ = 44592174816. Its totient is φ = 19070138880.

The previous prime is 31022120053. The next prime is 31022120111. The reversal of 31022120103 is 30102122013.

It is not a de Polignac number, because 31022120103 - 2²⁰ = 31021071527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31022120203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387918 + ... + 461003.

It is an arithmetic number, because the mean of its divisors is an integer number (2787010926).

Almost surely, 2^31022120103 is an apocalyptic number.

31022120103 is a deficient number, since it is larger than the sum of its proper divisors (13570054713).

31022120103 is a wasteful number, since it uses less digits than its factorization.

31022120103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849874.

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

Adding to 31022120103 its reverse (30102122013), we get a palindrome (61124242116).

The spelling of 31022120103 in words is "thirty-one billion, twenty-two million, one hundred twenty thousand, one hundred three".