13993031 has 6 divisors (see below), whose sum is σ = 15152400. Its totient is φ = 12916488.

The previous prime is 13993003. The next prime is 13993069. The reversal of 13993031 is 13039931.

It is not a de Polignac number, because 13993031 - 2¹⁸ = 13730887 is a prime.

It is a super-2 number, since 2×13993031² = 391609833133922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13992985 and 13993003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13993831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41231 + ... + 41568.

It is an arithmetic number, because the mean of its divisors is an integer number (2525400).

Almost surely, 2^13993031 is an apocalyptic number.

13993031 is a deficient number, since it is larger than the sum of its proper divisors (1159369).

13993031 is an equidigital number, since it uses as much as digits as its factorization.

13993031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82825 (or 82812 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 29.

The square root of 13993031 is about 3740.7259990542. The cubic root of 13993031 is about 240.9742286337.

The spelling of 13993031 in words is "thirteen million, nine hundred ninety-three thousand, thirty-one".