1315523142 has 24 divisors (see below), whose sum is σ = 2857285080. Its totient is φ = 437433120.

The previous prime is 1315523141. The next prime is 1315523147. The reversal of 1315523142 is 2413255131.

1315523142 is a `hidden beast` number, since 131 + 5 + 523 + 1 + 4 + 2 = 666.

It is a super-2 number, since 2×1315523142² = 3461202274275104328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315523141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81984 + ... + 96707.

It is an arithmetic number, because the mean of its divisors is an integer number (119053545).

Almost surely, 2^1315523142 is an apocalyptic number.

1315523142 is an abundant number, since it is smaller than the sum of its proper divisors (1541761938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315523142 is a wasteful number, since it uses less digits than its factorization.

1315523142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179108 (or 179105 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1315523142 is about 36270.1411907922. The cubic root of 1315523142 is about 1095.7197694720.

Adding to 1315523142 its reverse (2413255131), we get a palindrome (3728778273).

The spelling of 1315523142 in words is "one billion, three hundred fifteen million, five hundred twenty-three thousand, one hundred forty-two".