13381631042 has 8 divisors (see below), whose sum is σ = 21616480956. Its totient is φ = 6176137392.

The previous prime is 13381631033. The next prime is 13381631077. The reversal of 13381631042 is 24013618331.

It is a Cunningham number, because it is equal to 115679²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 13381631041 + 1 = 115679^2 + 1^2 .

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

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, 257339033 + ... + 257339084.

Almost surely, 2^13381631042 is an apocalyptic number.

13381631042 is a deficient number, since it is larger than the sum of its proper divisors (8234849914).

13381631042 is a wasteful number, since it uses less digits than its factorization.

13381631042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514678132.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 13381631042 in words is "thirteen billion, three hundred eighty-one million, six hundred thirty-one thousand, forty-two".