31213023022 has 8 divisors (see below), whose sum is σ = 47587068072. Its totient is φ = 15350667000.

The previous prime is 31213023013. The next prime is 31213023073. The reversal of 31213023022 is 22032031213.

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

It is a congruent number.

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, 127922104 + ... + 127922347.

It is an arithmetic number, because the mean of its divisors is an integer number (5948383509).

Almost surely, 2^31213023022 is an apocalyptic number.

31213023022 is a deficient number, since it is larger than the sum of its proper divisors (16374045050).

31213023022 is a wasteful number, since it uses less digits than its factorization.

31213023022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255844514.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31213023022 its reverse (22032031213), we get a palindrome (53245054235).

The spelling of 31213023022 in words is "thirty-one billion, two hundred thirteen million, twenty-three thousand, twenty-two".