1315124531 has 8 divisors (see below), whose sum is σ = 1534978560. Its totient is φ = 1103265288.

The previous prime is 1315124527. The next prime is 1315124533. The reversal of 1315124531 is 1354215131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1315124531 - 2² = 1315124527 is a prime.

It is a super-2 number, since 2×1315124531² = 3459105064075939922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315124531.

It is not an unprimeable number, because it can be changed into a prime (1315124533) 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, 1998341 + ... + 1998998.

It is an arithmetic number, because the mean of its divisors is an integer number (191872320).

Almost surely, 2^1315124531 is an apocalyptic number.

1315124531 is a deficient number, since it is larger than the sum of its proper divisors (219854029).

1315124531 is an equidigital number, since it uses as much as digits as its factorization.

1315124531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997393.

The product of its digits is 1800, while the sum is 26.

The square root of 1315124531 is about 36264.6457448573. The cubic root of 1315124531 is about 1095.6090885166.

Adding to 1315124531 its reverse (1354215131), we get a palindrome (2669339662).

The spelling of 1315124531 in words is "one billion, three hundred fifteen million, one hundred twenty-four thousand, five hundred thirty-one".