12523301631 has 6 divisors (see below), whose sum is σ = 18089213480. Its totient is φ = 8348867748.

The previous prime is 12523301611. The next prime is 12523301633. The reversal of 12523301631 is 13610332521.

12523301631 is a `hidden beast` number, since 1 + 2 + 5 + 23 + 3 + 0 + 1 + 631 = 666.

It is not a de Polignac number, because 12523301631 - 2⁷ = 12523301503 is a prime.

It is a super-2 number, since 2×12523301631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12523301595 and 12523301604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523301633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 695738971 + ... + 695738988.

Almost surely, 2^12523301631 is an apocalyptic number.

12523301631 is a deficient number, since it is larger than the sum of its proper divisors (5565911849).

12523301631 is a wasteful number, since it uses less digits than its factorization.

12523301631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391477965 (or 1391477962 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The spelling of 12523301631 in words is "twelve billion, five hundred twenty-three million, three hundred one thousand, six hundred thirty-one".