331012011977 has 2 divisors, whose sum is σ = 331012011978. Its totient is φ = 331012011976.

The previous prime is 331012011949. The next prime is 331012012003. The reversal of 331012011977 is 779110210133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205314109456 + 125697902521 = 453116^2 + 354539^2 .

It is a cyclic number.

It is not a de Polignac number, because 331012011977 - 2²⁰ = 331010963401 is a prime.

It is not a weakly prime, because it can be changed into another prime (331012011937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165506005988 + 165506005989.

It is an arithmetic number, because the mean of its divisors is an integer number (165506005989).

Almost surely, 2^331012011977 is an apocalyptic number.

It is an amenable number.

331012011977 is a deficient number, since it is larger than the sum of its proper divisors (1).

331012011977 is an equidigital number, since it uses as much as digits as its factorization.

331012011977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7938, while the sum is 35.

The spelling of 331012011977 in words is "three hundred thirty-one billion, twelve million, eleven thousand, nine hundred seventy-seven".