3115242131 has 4 divisors (see below), whose sum is σ = 3115742064. Its totient is φ = 3114742200.

The previous prime is 3115242043. The next prime is 3115242133. The reversal of 3115242131 is 1312425113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1312425113 = 37 ⋅35470949.

It is a cyclic number.

It is not a de Polignac number, because 3115242131 - 2²⁶ = 3048133267 is a prime.

It is a super-2 number, since 2×3115242131² = 19409467069514842322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3115242097 and 3115242106.

It is not an unprimeable number, because it can be changed into a prime (3115242133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240500 + ... + 253121.

It is an arithmetic number, because the mean of its divisors is an integer number (778935516).

Almost surely, 2^3115242131 is an apocalyptic number.

3115242131 is a deficient number, since it is larger than the sum of its proper divisors (499933).

3115242131 is an equidigital number, since it uses as much as digits as its factorization.

3115242131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499932.

The product of its digits is 720, while the sum is 23.

The square root of 3115242131 is about 55814.3541662895. The cubic root of 3115242131 is about 1460.4855661152.

Adding to 3115242131 its reverse (1312425113), we get a palindrome (4427667244).

The spelling of 3115242131 in words is "three billion, one hundred fifteen million, two hundred forty-two thousand, one hundred thirty-one".