31504673677 has 2 divisors, whose sum is σ = 31504673678. Its totient is φ = 31504673676.

The previous prime is 31504673663. The next prime is 31504673693. The reversal of 31504673677 is 77637640513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25893315396 + 5611358281 = 160914^2 + 74909^2 .

It is a cyclic number.

It is not a de Polignac number, because 31504673677 - 2¹¹ = 31504671629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31504673677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31504673077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15752336838 + 15752336839.

It is an arithmetic number, because the mean of its divisors is an integer number (15752336839).

Almost surely, 2^31504673677 is an apocalyptic number.

It is an amenable number.

31504673677 is a deficient number, since it is larger than the sum of its proper divisors (1).

31504673677 is an equidigital number, since it uses as much as digits as its factorization.

31504673677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2222640, while the sum is 49.

The spelling of 31504673677 in words is "thirty-one billion, five hundred four million, six hundred seventy-three thousand, six hundred seventy-seven".