31022123143 has 24 divisors (see below), whose sum is σ = 34609904784. Its totient is φ = 27780128640.

The previous prime is 31022123117. The next prime is 31022123147. The reversal of 31022123143 is 34132122013.

It is a de Polignac number, because none of the positive numbers 2^k-31022123143 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 (31022123147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8946096 + ... + 8949562.

It is an arithmetic number, because the mean of its divisors is an integer number (1442079366).

Almost surely, 2^31022123143 is an apocalyptic number.

31022123143 is a deficient number, since it is larger than the sum of its proper divisors (3587781641).

31022123143 is a wasteful number, since it uses less digits than its factorization.

31022123143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575 (or 4564 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31022123143 its reverse (34132122013), we get a palindrome (65154245156).

The spelling of 31022123143 in words is "thirty-one billion, twenty-two million, one hundred twenty-three thousand, one hundred forty-three".