2331309947 has 2 divisors, whose sum is σ = 2331309948. Its totient is φ = 2331309946.

The previous prime is 2331309907. The next prime is 2331309983. The reversal of 2331309947 is 7499031332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2331309947 - 2⁸ = 2331309691 is a prime.

It is a super-2 number, since 2×2331309947² = 10870012137962285618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2331309907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165654973 + 1165654974.

It is an arithmetic number, because the mean of its divisors is an integer number (1165654974).

Almost surely, 2^2331309947 is an apocalyptic number.

2331309947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331309947 is an equidigital number, since it uses as much as digits as its factorization.

2331309947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 2331309947 is about 48283.6405731796. The cubic root of 2331309947 is about 1325.9689027117.

The spelling of 2331309947 in words is "two billion, three hundred thirty-one million, three hundred nine thousand, nine hundred forty-seven".