5187431 has 4 divisors (see below), whose sum is σ = 5492592. Its totient is φ = 4882272.

The previous prime is 5187401. The next prime is 5187449. The reversal of 5187431 is 1347815.

5187431 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5187431 - 2⁶ = 5187367 is a prime.

It is a super-2 number, since 2×5187431² = 53818880759522, 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 = 5187394 and 5187403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5187401) 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, 152555 + ... + 152588.

It is an arithmetic number, because the mean of its divisors is an integer number (1373148).

Almost surely, 2^5187431 is an apocalyptic number.

5187431 is a deficient number, since it is larger than the sum of its proper divisors (305161).

5187431 is a wasteful number, since it uses less digits than its factorization.

5187431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305160.

The product of its digits is 3360, while the sum is 29.

The square root of 5187431 is about 2277.5932472678. The cubic root of 5187431 is about 173.1081217933.

The spelling of 5187431 in words is "five million, one hundred eighty-seven thousand, four hundred thirty-one".