1313526263 has 8 divisors (see below), whose sum is σ = 1526616960. Its totient is φ = 1106796600.

The previous prime is 1313526257. The next prime is 1313526299. The reversal of 1313526263 is 3626253131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1313526263 - 2¹² = 1313522167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313526163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1589813 + ... + 1590638.

It is an arithmetic number, because the mean of its divisors is an integer number (190827120).

Almost surely, 2^1313526263 is an apocalyptic number.

1313526263 is a deficient number, since it is larger than the sum of its proper divisors (213090697).

1313526263 is an equidigital number, since it uses as much as digits as its factorization.

1313526263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180517.

The product of its digits is 19440, while the sum is 32.

The square root of 1313526263 is about 36242.6028728622. The cubic root of 1313526263 is about 1095.1650781473.

Adding to 1313526263 its reverse (3626253131), we get a palindrome (4939779394).

The spelling of 1313526263 in words is "one billion, three hundred thirteen million, five hundred twenty-six thousand, two hundred sixty-three".