31266554314421 has 2 divisors, whose sum is σ = 31266554314422. Its totient is φ = 31266554314420.

The previous prime is 31266554314393. The next prime is 31266554314427. The reversal of 31266554314421 is 12441345566213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30945734026321 + 320820288100 = 5562889^2 + 566410^2 .

It is a cyclic number.

It is not a de Polignac number, because 31266554314421 - 2¹⁴ = 31266554298037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31266554314427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15633277157210 + 15633277157211.

It is an arithmetic number, because the mean of its divisors is an integer number (15633277157211).

Almost surely, 2^{31266554314421} is an apocalyptic number.

It is an amenable number.

31266554314421 is a deficient number, since it is larger than the sum of its proper divisors (1).

31266554314421 is an equidigital number, since it uses as much as digits as its factorization.

31266554314421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 47.

The spelling of 31266554314421 in words is "thirty-one trillion, two hundred sixty-six billion, five hundred fifty-four million, three hundred fourteen thousand, four hundred twenty-one".