31413590161 has 2 divisors, whose sum is σ = 31413590162. Its totient is φ = 31413590160.

The previous prime is 31413590147. The next prime is 31413590209. The reversal of 31413590161 is 16109531413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20168260225 + 11245329936 = 142015^2 + 106044^2 .

It is a cyclic number.

It is not a de Polignac number, because 31413590161 - 2²⁹ = 30876719249 is a prime.

It is not a weakly prime, because it can be changed into another prime (31413590111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15706795080 + 15706795081.

It is an arithmetic number, because the mean of its divisors is an integer number (15706795081).

Almost surely, 2^31413590161 is an apocalyptic number.

It is an amenable number.

31413590161 is a deficient number, since it is larger than the sum of its proper divisors (1).

31413590161 is an equidigital number, since it uses as much as digits as its factorization.

31413590161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 31413590161 in words is "thirty-one billion, four hundred thirteen million, five hundred ninety thousand, one hundred sixty-one".