315103231 has 4 divisors (see below), whose sum is σ = 315260712. Its totient is φ = 314945752.

The previous prime is 315103223. The next prime is 315103249. The reversal of 315103231 is 132301513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132301513 = 293 ⋅451541.

It is a cyclic number.

It is not a de Polignac number, because 315103231 - 2³ = 315103223 is a prime.

It is a super-2 number, since 2×315103231² = 198580092373278722, 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 = 315103199 and 315103208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315101231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75700 + ... + 79753.

It is an arithmetic number, because the mean of its divisors is an integer number (78815178).

Almost surely, 2^315103231 is an apocalyptic number.

315103231 is a deficient number, since it is larger than the sum of its proper divisors (157481).

315103231 is a wasteful number, since it uses less digits than its factorization.

315103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157480.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 315103231 is about 17751.1473150329. The cubic root of 315103231 is about 680.4835308036.

Adding to 315103231 its reverse (132301513), we get a palindrome (447404744).

The spelling of 315103231 in words is "three hundred fifteen million, one hundred three thousand, two hundred thirty-one".