31377684018 has 16 divisors (see below), whose sum is σ = 64451459520. Its totient is φ = 10176546096.

The previous prime is 31377683999. The next prime is 31377684071. The reversal of 31377684018 is 81048677313.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70670238 + ... + 70670681.

It is an arithmetic number, because the mean of its divisors is an integer number (4028216220).

Almost surely, 2^31377684018 is an apocalyptic number.

31377684018 is an abundant number, since it is smaller than the sum of its proper divisors (33073775502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31377684018 is a wasteful number, since it uses less digits than its factorization.

31377684018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141340961.

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 31377684018 in words is "thirty-one billion, three hundred seventy-seven million, six hundred eighty-four thousand, eighteen".