31970242823 has 4 divisors (see below), whose sum is σ = 33850845360. Its totient is φ = 30089640288.

The previous prime is 31970242751. The next prime is 31970242831. The reversal of 31970242823 is 32824207913.

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

It is a cyclic number.

It is not a de Polignac number, because 31970242823 - 2³⁴ = 14790373639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31970242873) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 940301243 + ... + 940301276.

It is an arithmetic number, because the mean of its divisors is an integer number (8462711340).

Almost surely, 2^31970242823 is an apocalyptic number.

31970242823 is a deficient number, since it is larger than the sum of its proper divisors (1880602537).

31970242823 is a wasteful number, since it uses less digits than its factorization.

31970242823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880602536.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 31970242823 in words is "thirty-one billion, nine hundred seventy million, two hundred forty-two thousand, eight hundred twenty-three".