311382972503 has 2 divisors, whose sum is σ = 311382972504. Its totient is φ = 311382972502.

The previous prime is 311382972437. The next prime is 311382972517. The reversal of 311382972503 is 305279283113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311382972503 - 2²⁰ = 311381923927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311382972203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155691486251 + 155691486252.

It is an arithmetic number, because the mean of its divisors is an integer number (155691486252).

Almost surely, 2^311382972503 is an apocalyptic number.

311382972503 is a deficient number, since it is larger than the sum of its proper divisors (1).

311382972503 is an equidigital number, since it uses as much as digits as its factorization.

311382972503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 311382972503 in words is "three hundred eleven billion, three hundred eighty-two million, nine hundred seventy-two thousand, five hundred three".