994001023931 has 2 divisors, whose sum is σ = 994001023932. Its totient is φ = 994001023930.

The previous prime is 994001023927. The next prime is 994001023937. The reversal of 994001023931 is 139320100499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 994001023931 - 2² = 994001023927 is a prime.

It is a super-2 number, since 2×994001023931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (994001023937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497000511965 + 497000511966.

It is an arithmetic number, because the mean of its divisors is an integer number (497000511966).

Almost surely, 2^994001023931 is an apocalyptic number.

994001023931 is a deficient number, since it is larger than the sum of its proper divisors (1).

994001023931 is an equidigital number, since it uses as much as digits as its factorization.

994001023931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 41.

The spelling of 994001023931 in words is "nine hundred ninety-four billion, one million, twenty-three thousand, nine hundred thirty-one".