31157608345 has 8 divisors (see below), whose sum is σ = 37417313664. Its totient is φ = 24907297584.

The previous prime is 31157608331. The next prime is 31157608393. The reversal of 31157608345 is 54380675113.

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 31157608345 - 2³³ = 22567673753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2341339 + ... + 2354608.

It is an arithmetic number, because the mean of its divisors is an integer number (4677164208).

Almost surely, 2^31157608345 is an apocalyptic number.

It is an amenable number.

31157608345 is a deficient number, since it is larger than the sum of its proper divisors (6259705319).

31157608345 is a wasteful number, since it uses less digits than its factorization.

31157608345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4697279.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 31157608345 in words is "thirty-one billion, one hundred fifty-seven million, six hundred eight thousand, three hundred forty-five".