5231540331 has 8 divisors (see below), whose sum is σ = 7750430160. Its totient is φ = 3487693536.

The previous prime is 5231540311. The next prime is 5231540333. The reversal of 5231540331 is 1330451325.

It is not a de Polignac number, because 5231540331 - 2¹⁰ = 5231539307 is a prime.

It is a super-2 number, since 2×5231540331² = 54738028469759179122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 193760753 = 5231540331 / (5 + 2 + 3 + 1 + 5 + 4 + 0 + 3 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 5231540295 and 5231540304.

It is not an unprimeable number, because it can be changed into a prime (5231540333) 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, 96880350 + ... + 96880403.

It is an arithmetic number, because the mean of its divisors is an integer number (968803770).

Almost surely, 2^5231540331 is an apocalyptic number.

5231540331 is a deficient number, since it is larger than the sum of its proper divisors (2518889829).

5231540331 is a wasteful number, since it uses less digits than its factorization.

5231540331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193760762 (or 193760756 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 5231540331 is about 72329.3877410835. The cubic root of 5231540331 is about 1735.9739048501.

Adding to 5231540331 its reverse (1330451325), we get a palindrome (6561991656).

The spelling of 5231540331 in words is "five billion, two hundred thirty-one million, five hundred forty thousand, three hundred thirty-one".