3123343931 has 2 divisors, whose sum is σ = 3123343932. Its totient is φ = 3123343930.

The previous prime is 3123343859. The next prime is 3123343957. The reversal of 3123343931 is 1393433213.

It is a strong prime.

It is an emirp because it is prime and its reverse (1393433213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3123343931 is a prime.

It is a super-2 number, since 2×3123343931² = 19510554622629065522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3123343981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561671965 + 1561671966.

It is an arithmetic number, because the mean of its divisors is an integer number (1561671966).

Almost surely, 2^3123343931 is an apocalyptic number.

3123343931 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123343931 is an equidigital number, since it uses as much as digits as its factorization.

3123343931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 32.

The square root of 3123343931 is about 55886.8851431174. The cubic root of 3123343931 is about 1461.7505634650.

The spelling of 3123343931 in words is "three billion, one hundred twenty-three million, three hundred forty-three thousand, nine hundred thirty-one".