31116752158 has 4 divisors (see below), whose sum is σ = 46675128240. Its totient is φ = 15558376078.

The previous prime is 31116752089. The next prime is 31116752171. The reversal of 31116752158 is 85125761113.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31116752158.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7779188038 + ... + 7779188041.

It is an arithmetic number, because the mean of its divisors is an integer number (11668782060).

Almost surely, 2^31116752158 is an apocalyptic number.

31116752158 is a deficient number, since it is larger than the sum of its proper divisors (15558376082).

31116752158 is a wasteful number, since it uses less digits than its factorization.

31116752158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15558376081.

The product of its digits is 50400, while the sum is 40.

The spelling of 31116752158 in words is "thirty-one billion, one hundred sixteen million, seven hundred fifty-two thousand, one hundred fifty-eight".