1315540131 has 16 divisors (see below), whose sum is σ = 1832651520. Its totient is φ = 837825120.

The previous prime is 1315540117. The next prime is 1315540133. The reversal of 1315540131 is 1310455131.

It is not a de Polignac number, because 1315540131 - 2⁹ = 1315539619 is a prime.

It is a super-2 number, since 2×1315540131² = 3461291672542994322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1315540133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44205 + ... + 67713.

It is an arithmetic number, because the mean of its divisors is an integer number (114540720).

Almost surely, 2^1315540131 is an apocalyptic number.

1315540131 is a deficient number, since it is larger than the sum of its proper divisors (517111389).

1315540131 is a wasteful number, since it uses less digits than its factorization.

1315540131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24346.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1315540131 is about 36270.3753909441. The cubic root of 1315540131 is about 1095.7244862528.

Adding to 1315540131 its reverse (1310455131), we get a palindrome (2625995262).

The spelling of 1315540131 in words is "one billion, three hundred fifteen million, five hundred forty thousand, one hundred thirty-one".