31200042022423 has 4 divisors (see below), whose sum is σ = 31363393027968. Its totient is φ = 31036691016880.

The previous prime is 31200042022421. The next prime is 31200042022441. The reversal of 31200042022423 is 32422024000213.

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 31200042022423 - 2¹ = 31200042022421 is a prime.

It is a super-2 number, since 2×31200042022423² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31200042022421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81675502486 + ... + 81675502867.

It is an arithmetic number, because the mean of its divisors is an integer number (7840848256992).

Almost surely, 2^{31200042022423} is an apocalyptic number.

31200042022423 is a deficient number, since it is larger than the sum of its proper divisors (163351005545).

31200042022423 is a wasteful number, since it uses less digits than its factorization.

31200042022423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163351005544.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 31200042022423 its reverse (32422024000213), we get a palindrome (63622066022636).

The spelling of 31200042022423 in words is "thirty-one trillion, two hundred billion, forty-two million, twenty-two thousand, four hundred twenty-three".