1313503232531 has 12 divisors (see below), whose sum is σ = 1594385469072. Its totient is φ = 1076909481648.

The previous prime is 1313503232507. The next prime is 1313503232537. The reversal of 1313503232531 is 1352323053131.

It is not a de Polignac number, because 1313503232531 - 2⁶ = 1313503232467 is a prime.

It is a super-2 number, since 2×1313503232531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313503232537) 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, 582742100 + ... + 582744353.

It is an arithmetic number, because the mean of its divisors is an integer number (132865455756).

Almost surely, 2^{1313503232531} is an apocalyptic number.

1313503232531 is a deficient number, since it is larger than the sum of its proper divisors (280882236541).

1313503232531 is a wasteful number, since it uses less digits than its factorization.

1313503232531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165486490 (or 1165486483 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 32.

Adding to 1313503232531 its reverse (1352323053131), we get a palindrome (2665826285662).

The spelling of 1313503232531 in words is "one trillion, three hundred thirteen billion, five hundred three million, two hundred thirty-two thousand, five hundred thirty-one".