5431320 has 128 divisors (see below), whose sum is σ = 18662400. Its totient is φ = 1404288.

The previous prime is 5431303. The next prime is 5431331. The reversal of 5431320 is 231345.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 5431293 and 5431302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50707 + ... + 50813.

It is an arithmetic number, because the mean of its divisors is an integer number (145800).

Almost surely, 2^5431320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5431320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9331200).

5431320 is an abundant number, since it is smaller than the sum of its proper divisors (13231080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5431320 is a wasteful number, since it uses less digits than its factorization.

5431320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 5431320 is about 2330.5192554450. The cubic root of 5431320 is about 175.7795966956.

Adding to 5431320 its reverse (231345), we get a palindrome (5662665).

The spelling of 5431320 in words is "five million, four hundred thirty-one thousand, three hundred twenty".