31212032130103 has 4 divisors (see below), whose sum is σ = 34049489596488. Its totient is φ = 28374574663720.

The previous prime is 31212032130079. The next prime is 31212032130107. The reversal of 31212032130103 is 30103123021213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31212032130103 - 2²⁵ = 31211998575671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212032130107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1418728733176 + ... + 1418728733197.

It is an arithmetic number, because the mean of its divisors is an integer number (8512372399122).

Almost surely, 2^{31212032130103} is an apocalyptic number.

31212032130103 is a deficient number, since it is larger than the sum of its proper divisors (2837457466385).

31212032130103 is a wasteful number, since it uses less digits than its factorization.

31212032130103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837457466384.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31212032130103 its reverse (30103123021213), we get a palindrome (61315155151316).

The spelling of 31212032130103 in words is "thirty-one trillion, two hundred twelve billion, thirty-two million, one hundred thirty thousand, one hundred three".