13699031 has 4 divisors (see below), whose sum is σ = 13748064. Its totient is φ = 13650000.

The previous prime is 13699027. The next prime is 13699039. The reversal of 13699031 is 13099631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13699031 - 2² = 13699027 is a prime.

It is a super-2 number, since 2×13699031² = 375326900677922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13699039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24095 + ... + 24656.

It is an arithmetic number, because the mean of its divisors is an integer number (3437016).

Almost surely, 2^13699031 is an apocalyptic number.

13699031 is a deficient number, since it is larger than the sum of its proper divisors (49033).

13699031 is an equidigital number, since it uses as much as digits as its factorization.

13699031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49032.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 13699031 is about 3701.2202042029. The cubic root of 13699031 is about 239.2746095134.

The spelling of 13699031 in words is "thirteen million, six hundred ninety-nine thousand, thirty-one".