1315540132 has 6 divisors (see below), whose sum is σ = 2302195238. Its totient is φ = 657770064.

The previous prime is 1315540117. The next prime is 1315540133. The reversal of 1315540132 is 2310455131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1312902756 + 2637376 = 36234^2 + 1624^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1315540097 and 1315540106.

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 as a sum of consecutive naturals, namely, 164442513 + ... + 164442520.

Almost surely, 2^1315540132 is an apocalyptic number.

It is an amenable number.

1315540132 is a deficient number, since it is larger than the sum of its proper divisors (986655106).

1315540132 is a wasteful number, since it uses less digits than its factorization.

1315540132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328885037 (or 328885035 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1315540132 is about 36270.3754047294. The cubic root of 1315540132 is about 1095.7244865305.

Adding to 1315540132 its reverse (2310455131), we get a palindrome (3625995263).

The spelling of 1315540132 in words is "one billion, three hundred fifteen million, five hundred forty thousand, one hundred thirty-two".