5123531231 has 16 divisors (see below), whose sum is σ = 6509303808. Its totient is φ = 3923013600.

The previous prime is 5123531219. The next prime is 5123531251. The reversal of 5123531231 is 1321353215.

It is a cyclic number.

It is not a de Polignac number, because 5123531231 - 2¹⁸ = 5123269087 is a prime.

It is a super-2 number, since 2×5123531231² = 52501144550064750722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5123531231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5123531251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905285 + ... + 910926.

It is an arithmetic number, because the mean of its divisors is an integer number (406831488).

Almost surely, 2^5123531231 is an apocalyptic number.

5123531231 is a deficient number, since it is larger than the sum of its proper divisors (1385772577).

5123531231 is a wasteful number, since it uses less digits than its factorization.

5123531231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816262.

The product of its digits is 2700, while the sum is 26.

The square root of 5123531231 is about 71578.8462536244. The cubic root of 5123531231 is about 1723.9439008909.

Adding to 5123531231 its reverse (1321353215), we get a palindrome (6444884446).

The spelling of 5123531231 in words is "five billion, one hundred twenty-three million, five hundred thirty-one thousand, two hundred thirty-one".