31242026192621 has 4 divisors (see below), whose sum is σ = 31243502470752. Its totient is φ = 31240549914492.

The previous prime is 31242026192579. The next prime is 31242026192623. The reversal of 31242026192621 is 12629162024213.

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 31242026192621 - 2²⁶ = 31241959083757 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 (31242026192623) 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, 738107321 + ... + 738149646.

It is an arithmetic number, because the mean of its divisors is an integer number (7810875617688).

Almost surely, 2^{31242026192621} is an apocalyptic number.

It is an amenable number.

31242026192621 is a deficient number, since it is larger than the sum of its proper divisors (1476278131).

31242026192621 is a wasteful number, since it uses less digits than its factorization.

31242026192621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476278130.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 31242026192621 in words is "thirty-one trillion, two hundred forty-two billion, twenty-six million, one hundred ninety-two thousand, six hundred twenty-one".