993964031 has 2 divisors, whose sum is σ = 993964032. Its totient is φ = 993964030.

The previous prime is 993964001. The next prime is 993964051. The reversal of 993964031 is 130469399.

It is a strong prime.

It is an emirp because it is prime and its reverse (130469399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 993964031 - 2²² = 989769727 is a prime.

It is a super-2 number, since 2×993964031² = 1975928989843537922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993964001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496982015 + 496982016.

It is an arithmetic number, because the mean of its divisors is an integer number (496982016).

Almost surely, 2^993964031 is an apocalyptic number.

993964031 is a deficient number, since it is larger than the sum of its proper divisors (1).

993964031 is an equidigital number, since it uses as much as digits as its factorization.

993964031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 993964031 is about 31527.1951020068. The cubic root of 993964031 is about 997.9839486015.

The spelling of 993964031 in words is "nine hundred ninety-three million, nine hundred sixty-four thousand, thirty-one".