31050454721761 has 2 divisors, whose sum is σ = 31050454721762. Its totient is φ = 31050454721760.

The previous prime is 31050454721731. The next prime is 31050454721899. The reversal of 31050454721761 is 16712745405013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22011298224400 + 9039156497361 = 4691620^2 + 3006519^2 .

It is a cyclic number.

It is not a de Polignac number, because 31050454721761 - 2¹³ = 31050454713569 is a prime.

It is a super-2 number, since 2×31050454721761² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31050454721701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15525227360880 + 15525227360881.

It is an arithmetic number, because the mean of its divisors is an integer number (15525227360881).

Almost surely, 2^{31050454721761} is an apocalyptic number.

It is an amenable number.

31050454721761 is a deficient number, since it is larger than the sum of its proper divisors (1).

31050454721761 is an equidigital number, since it uses as much as digits as its factorization.

31050454721761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 31050454721761 in words is "thirty-one trillion, fifty billion, four hundred fifty-four million, seven hundred twenty-one thousand, seven hundred sixty-one".