5231515331 has 12 divisors (see below), whose sum is σ = 6089828472. Its totient is φ = 4481070048.

The previous prime is 5231515283. The next prime is 5231515343. The reversal of 5231515331 is 1335151325.

It is a happy number.

It is not a de Polignac number, because 5231515331 - 2¹⁰ = 5231514307 is a prime.

It is a super-2 number, since 2×5231515331² = 54737505316976079122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5231515294 and 5231515303.

It is not an unprimeable number, because it can be changed into a prime (5231515831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36671 + ... + 108663.

It is an arithmetic number, because the mean of its divisors is an integer number (507485706).

Almost surely, 2^5231515331 is an apocalyptic number.

5231515331 is a deficient number, since it is larger than the sum of its proper divisors (858313141).

5231515331 is a wasteful number, since it uses less digits than its factorization.

5231515331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73490 (or 73483 counting only the distinct ones).

The product of its digits is 6750, while the sum is 29.

The square root of 5231515331 is about 72329.2149203902. The cubic root of 5231515331 is about 1735.9711396087.

Adding to 5231515331 its reverse (1335151325), we get a palindrome (6566666656).

The spelling of 5231515331 in words is "five billion, two hundred thirty-one million, five hundred fifteen thousand, three hundred thirty-one".