12345912631 has 8 divisors (see below), whose sum is σ = 13296464720. Its totient is φ = 11395484352.

The previous prime is 12345912629. The next prime is 12345912637. The reversal of 12345912631 is 13621954321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12345912631 - 2¹ = 12345912629 is a prime.

It is a super-2 number, since 2×12345912631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345912637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348715 + ... + 382483.

It is an arithmetic number, because the mean of its divisors is an integer number (1662058090).

Almost surely, 2^12345912631 is an apocalyptic number.

12345912631 is a deficient number, since it is larger than the sum of its proper divisors (950552089).

12345912631 is a wasteful number, since it uses less digits than its factorization.

12345912631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61905.

The product of its digits is 38880, while the sum is 37.

The spelling of 12345912631 in words is "twelve billion, three hundred forty-five million, nine hundred twelve thousand, six hundred thirty-one".