1315132131 has 4 divisors (see below), whose sum is σ = 1753509512. Its totient is φ = 876754752.

The previous prime is 1315132109. The next prime is 1315132171. The reversal of 1315132131 is 1312315131.

1315132131 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1315132131 - 2⁶ = 1315132067 is a prime.

It is a super-2 number, since 2×1315132131² = 3459145043977202322, 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 = 1315132098 and 1315132107.

It is not an unprimeable number, because it can be changed into a prime (1315132171) 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, 219188686 + ... + 219188691.

It is an arithmetic number, because the mean of its divisors is an integer number (438377378).

Almost surely, 2^1315132131 is an apocalyptic number.

1315132131 is a deficient number, since it is larger than the sum of its proper divisors (438377381).

1315132131 is an equidigital number, since it uses as much as digits as its factorization.

1315132131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438377380.

The product of its digits is 270, while the sum is 21.

The square root of 1315132131 is about 36264.7505299568. The cubic root of 1315132131 is about 1095.6111989918.

Adding to 1315132131 its reverse (1312315131), we get a palindrome (2627447262).

The spelling of 1315132131 in words is "one billion, three hundred fifteen million, one hundred thirty-two thousand, one hundred thirty-one".