31378491874 has 8 divisors (see below), whose sum is σ = 47070144000. Its totient is φ = 15688443876.

The previous prime is 31378491857. The next prime is 31378491883. The reversal of 31378491874 is 47819487313.

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

It is a super-3 number, since 3×31378491874³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350874 + ... + 431125.

It is an arithmetic number, because the mean of its divisors is an integer number (5883768000).

Almost surely, 2^31378491874 is an apocalyptic number.

31378491874 is a deficient number, since it is larger than the sum of its proper divisors (15691652126).

31378491874 is a wasteful number, since it uses less digits than its factorization.

31378491874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802064.

The product of its digits is 4064256, while the sum is 55.

The spelling of 31378491874 in words is "thirty-one billion, three hundred seventy-eight million, four hundred ninety-one thousand, eight hundred seventy-four".