3138978951323 has 2 divisors, whose sum is σ = 3138978951324. Its totient is φ = 3138978951322.

The previous prime is 3138978951301. The next prime is 3138978951397. The reversal of 3138978951323 is 3231598798313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3138978951323 - 2²² = 3138974757019 is a prime.

It is not a weakly prime, because it can be changed into another prime (3138978953323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569489475661 + 1569489475662.

It is an arithmetic number, because the mean of its divisors is an integer number (1569489475662).

Almost surely, 2^{3138978951323} is an apocalyptic number.

3138978951323 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138978951323 is an equidigital number, since it uses as much as digits as its factorization.

3138978951323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 62.

The spelling of 3138978951323 in words is "three trillion, one hundred thirty-eight billion, nine hundred seventy-eight million, nine hundred fifty-one thousand, three hundred twenty-three".