31363328377 has 2 divisors, whose sum is σ = 31363328378. Its totient is φ = 31363328376.

The previous prime is 31363328363. The next prime is 31363328417. The reversal of 31363328377 is 77382336313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24320090601 + 7043237776 = 155949^2 + 83924^2 .

It is a cyclic number.

It is not a de Polignac number, because 31363328377 - 2¹⁹ = 31362804089 is a prime.

It is not a weakly prime, because it can be changed into another prime (31363328077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15681664188 + 15681664189.

It is an arithmetic number, because the mean of its divisors is an integer number (15681664189).

Almost surely, 2^31363328377 is an apocalyptic number.

It is an amenable number.

31363328377 is a deficient number, since it is larger than the sum of its proper divisors (1).

31363328377 is an equidigital number, since it uses as much as digits as its factorization.

31363328377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 46.

The spelling of 31363328377 in words is "thirty-one billion, three hundred sixty-three million, three hundred twenty-eight thousand, three hundred seventy-seven".