31162354421 has 4 divisors (see below), whose sum is σ = 33995295744. Its totient is φ = 28329413100.

The previous prime is 31162354393. The next prime is 31162354427. The reversal of 31162354421 is 12445326113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31162354421 - 2¹⁴ = 31162338037 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 (31162354427) 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, 1416470645 + ... + 1416470666.

It is an arithmetic number, because the mean of its divisors is an integer number (8498823936).

Almost surely, 2^31162354421 is an apocalyptic number.

It is an amenable number.

31162354421 is a deficient number, since it is larger than the sum of its proper divisors (2832941323).

31162354421 is a wasteful number, since it uses less digits than its factorization.

31162354421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832941322.

The product of its digits is 17280, while the sum is 32.

It can be divided in two parts, 31162 and 354421, that added together give a palindrome (385583).

The spelling of 31162354421 in words is "thirty-one billion, one hundred sixty-two million, three hundred fifty-four thousand, four hundred twenty-one".