1313142520 has 32 divisors (see below), whose sum is σ = 2982193200. Its totient is φ = 520346368.

The previous prime is 1313142463. The next prime is 1313142529. The reversal of 1313142520 is 252413131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1313142491 and 1313142500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313142529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149125 + ... + 157684.

Almost surely, 2^1313142520 is an apocalyptic number.

1313142520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313142520 is an abundant number, since it is smaller than the sum of its proper divisors (1669050680).

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

1313142520 is a wasteful number, since it uses less digits than its factorization.

1313142520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306927 (or 306923 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1313142520 is about 36237.3083989416. The cubic root of 1313142520 is about 1095.0584179616.

Adding to 1313142520 its reverse (252413131), we get a palindrome (1565555651).

The spelling of 1313142520 in words is "one billion, three hundred thirteen million, one hundred forty-two thousand, five hundred twenty".