5431391 has 8 divisors (see below), whose sum is σ = 6255744. Its totient is φ = 4619160.

The previous prime is 5431369. The next prime is 5431399. The reversal of 5431391 is 1931345.

5431391 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5431391 - 2¹⁰ = 5430367 is a prime.

It is an Ulam number.

It is a Duffinian number.

5431391 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 5431391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5431399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2045 + ... + 3878.

It is an arithmetic number, because the mean of its divisors is an integer number (781968).

Almost surely, 2^5431391 is an apocalyptic number.

5431391 is a deficient number, since it is larger than the sum of its proper divisors (824353).

5431391 is a wasteful number, since it uses less digits than its factorization.

5431391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6061.

The product of its digits is 1620, while the sum is 26.

The square root of 5431391 is about 2330.5344880520. The cubic root of 5431391 is about 175.7803626418.

The spelling of 5431391 in words is "five million, four hundred thirty-one thousand, three hundred ninety-one".