31929374679 has 4 divisors (see below), whose sum is σ = 42572499576. Its totient is φ = 21286249784.

The previous prime is 31929374669. The next prime is 31929374689. The reversal of 31929374679 is 97647392913.

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

It is an interprime number because it is at equal distance from previous prime (31929374669) and next prime (31929374689).

It is a cyclic number.

It is not a de Polignac number, because 31929374679 - 2⁹ = 31929374167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31929374669) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 5321562444 + ... + 5321562449.

It is an arithmetic number, because the mean of its divisors is an integer number (10643124894).

Almost surely, 2^31929374679 is an apocalyptic number.

31929374679 is a deficient number, since it is larger than the sum of its proper divisors (10643124897).

31929374679 is a wasteful number, since it uses less digits than its factorization.

31929374679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10643124896.

The product of its digits is 15431472, while the sum is 60.

The spelling of 31929374679 in words is "thirty-one billion, nine hundred twenty-nine million, three hundred seventy-four thousand, six hundred seventy-nine".