13031707642 has 8 divisors (see below), whose sum is σ = 19599968916. Its totient is φ = 6498384672.

The previous prime is 13031707627. The next prime is 13031707651. The reversal of 13031707642 is 24670713031.

It can be written as a sum of positive squares in 2 ways, for example, as 12525862561 + 505845081 = 111919^2 + 22491^2 .

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

It is a super-2 number, since 2×13031707642² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13031707598 and 13031707607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8733643 + ... + 8735134.

Almost surely, 2^13031707642 is an apocalyptic number.

13031707642 is a deficient number, since it is larger than the sum of its proper divisors (6568261274).

13031707642 is a wasteful number, since it uses less digits than its factorization.

13031707642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17469152.

The product of its (nonzero) digits is 21168, while the sum is 34.

The spelling of 13031707642 in words is "thirteen billion, thirty-one million, seven hundred seven thousand, six hundred forty-two".