5115313431 has 8 divisors (see below), whose sum is σ = 7578242160. Its totient is φ = 3410208936.

The previous prime is 5115313409. The next prime is 5115313453. The reversal of 5115313431 is 1343135115.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5115313409) and next prime (5115313453).

It is not a de Polignac number, because 5115313431 - 2⁷ = 5115313303 is a prime.

It is a super-2 number, since 2×5115313431² = 52332862994737983522, 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: 189456053 = 5115313431 / (5 + 1 + 1 + 5 + 3 + 1 + 3 + 4 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 5115313395 and 5115313404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5115313531) 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, 94728000 + ... + 94728053.

It is an arithmetic number, because the mean of its divisors is an integer number (947280270).

Almost surely, 2^5115313431 is an apocalyptic number.

5115313431 is a deficient number, since it is larger than the sum of its proper divisors (2462928729).

5115313431 is a wasteful number, since it uses less digits than its factorization.

5115313431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189456062 (or 189456056 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 5115313431 is about 71521.4193860832. The cubic root of 5115313431 is about 1723.0217109256.

Adding to 5115313431 its reverse (1343135115), we get a palindrome (6458448546).

The spelling of 5115313431 in words is "five billion, one hundred fifteen million, three hundred thirteen thousand, four hundred thirty-one".