31170255461 has 2 divisors, whose sum is σ = 31170255462. Its totient is φ = 31170255460.

The previous prime is 31170255439. The next prime is 31170255511. The reversal of 31170255461 is 16455207113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31092268900 + 77986561 = 176330^2 + 8831^2 .

It is a cyclic number.

It is not a de Polignac number, because 31170255461 - 2¹⁴ = 31170239077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31170255161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15585127730 + 15585127731.

It is an arithmetic number, because the mean of its divisors is an integer number (15585127731).

Almost surely, 2^31170255461 is an apocalyptic number.

It is an amenable number.

31170255461 is a deficient number, since it is larger than the sum of its proper divisors (1).

31170255461 is an equidigital number, since it uses as much as digits as its factorization.

31170255461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 31170255461 in words is "thirty-one billion, one hundred seventy million, two hundred fifty-five thousand, four hundred sixty-one".