5311531 has 6 divisors (see below), whose sum is σ = 5642660. Its totient is φ = 4998816.

The previous prime is 5311511. The next prime is 5311543. The reversal of 5311531 is 1351135.

5311531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5311531 - 2⁵ = 5311499 is a prime.

It is a super-2 number, since 2×5311531² = 56424723127922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5311499 and 5311508.

It is not an unprimeable number, because it can be changed into a prime (5311511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8901 + ... + 9478.

Almost surely, 2^5311531 is an apocalyptic number.

5311531 is a deficient number, since it is larger than the sum of its proper divisors (331129).

5311531 is a wasteful number, since it uses less digits than its factorization.

5311531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18413 (or 18396 counting only the distinct ones).

The product of its digits is 225, while the sum is 19.

The square root of 5311531 is about 2304.6758991233. The cubic root of 5311531 is about 174.4776916389.

Adding to 5311531 its reverse (1351135), we get a palindrome (6662666).

The spelling of 5311531 in words is "five million, three hundred eleven thousand, five hundred thirty-one".