14087431 has 4 divisors (see below), whose sum is σ = 14699952. Its totient is φ = 13474912.

The previous prime is 14087399. The next prime is 14087459. The reversal of 14087431 is 13478041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13478041 = 107 ⋅125963.

It is a cyclic number.

It is not a de Polignac number, because 14087431 - 2⁵ = 14087399 is a prime.

It is a super-2 number, since 2×14087431² = 396911424359522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14087431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14087461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306226 + ... + 306271.

It is an arithmetic number, because the mean of its divisors is an integer number (3674988).

Almost surely, 2^14087431 is an apocalyptic number.

14087431 is a deficient number, since it is larger than the sum of its proper divisors (612521).

14087431 is an equidigital number, since it uses as much as digits as its factorization.

14087431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612520.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 14087431 is about 3753.3226613229. The cubic root of 14087431 is about 241.5149026263.

It can be divided in two parts, 140 and 87431, that added together give a triangular number (87571 = T₄₁₈).

The spelling of 14087431 in words is "fourteen million, eighty-seven thousand, four hundred thirty-one".