31634582377 has 2 divisors, whose sum is σ = 31634582378. Its totient is φ = 31634582376.

The previous prime is 31634582359. The next prime is 31634582407. The reversal of 31634582377 is 77328543613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31591863081 + 42719296 = 177741^2 + 6536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31634582377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31634582377.

It is not a weakly prime, because it can be changed into another prime (31634582327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15817291188 + 15817291189.

It is an arithmetic number, because the mean of its divisors is an integer number (15817291189).

Almost surely, 2^31634582377 is an apocalyptic number.

It is an amenable number.

31634582377 is a deficient number, since it is larger than the sum of its proper divisors (1).

31634582377 is an equidigital number, since it uses as much as digits as its factorization.

31634582377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 49.

The spelling of 31634582377 in words is "thirty-one billion, six hundred thirty-four million, five hundred eighty-two thousand, three hundred seventy-seven".