93400031 has 2 divisors, whose sum is σ = 93400032. Its totient is φ = 93400030.

The previous prime is 93400019. The next prime is 93400049. The reversal of 93400031 is 13000439.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 93400031 - 2¹⁸ = 93137887 is a prime.

It is a super-2 number, since 2×93400031² = 17447131581601922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 93399976 and 93400012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93400001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46700015 + 46700016.

It is an arithmetic number, because the mean of its divisors is an integer number (46700016).

Almost surely, 2^93400031 is an apocalyptic number.

93400031 is a deficient number, since it is larger than the sum of its proper divisors (1).

93400031 is an equidigital number, since it uses as much as digits as its factorization.

93400031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 93400031 is about 9664.3691465093. The cubic root of 93400031 is about 453.7141670181.

The spelling of 93400031 in words is "ninety-three million, four hundred thousand, thirty-one".