31542144023 has 16 divisors (see below), whose sum is σ = 35407260000. Its totient is φ = 27906062976.

The previous prime is 31542143981. The next prime is 31542144037. The reversal of 31542144023 is 32044124513.

It is a cyclic number.

It is not a de Polignac number, because 31542144023 - 2⁶ = 31542143959 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 (31542144083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 457148 + ... + 521601.

It is an arithmetic number, because the mean of its divisors is an integer number (2212953750).

Almost surely, 2^31542144023 is an apocalyptic number.

31542144023 is a deficient number, since it is larger than the sum of its proper divisors (3865115977).

31542144023 is a wasteful number, since it uses less digits than its factorization.

31542144023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978866.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 31542144023 its reverse (32044124513), we get a palindrome (63586268536).

The spelling of 31542144023 in words is "thirty-one billion, five hundred forty-two million, one hundred forty-four thousand, twenty-three".