31420326442621 has 4 divisors (see below), whose sum is σ = 31862866251744. Its totient is φ = 30977786633500.

The previous prime is 31420326442619. The next prime is 31420326442639. The reversal of 31420326442621 is 12624462302413.

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 31420326442621 - 2¹ = 31420326442619 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 (31420326442651) 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, 221269904455 + ... + 221269904596.

It is an arithmetic number, because the mean of its divisors is an integer number (7965716562936).

Almost surely, 2^{31420326442621} is an apocalyptic number.

It is an amenable number.

31420326442621 is a deficient number, since it is larger than the sum of its proper divisors (442539809123).

31420326442621 is an equidigital number, since it uses as much as digits as its factorization.

31420326442621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442539809122.

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 31420326442621 in words is "thirty-one trillion, four hundred twenty billion, three hundred twenty-six million, four hundred forty-two thousand, six hundred twenty-one".