31790836061 has 2 divisors, whose sum is σ = 31790836062. Its totient is φ = 31790836060.

The previous prime is 31790836039. The next prime is 31790836079. The reversal of 31790836061 is 16063809713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29586064036 + 2204772025 = 172006^2 + 46955^2 .

It is a cyclic number.

It is not a de Polignac number, because 31790836061 - 2¹⁴ = 31790819677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31790830061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15895418030 + 15895418031.

It is an arithmetic number, because the mean of its divisors is an integer number (15895418031).

Almost surely, 2^31790836061 is an apocalyptic number.

It is an amenable number.

31790836061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31790836061 is an equidigital number, since it uses as much as digits as its factorization.

31790836061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 31790836061 in words is "thirty-one billion, seven hundred ninety million, eight hundred thirty-six thousand, sixty-one".