313261263 has 36 divisors (see below), whose sum is σ = 545879880. Its totient is φ = 178999632.

The previous prime is 313261259. The next prime is 313261309. The reversal of 313261263 is 362162313.

It is a happy number.

It is not a de Polignac number, because 313261263 - 2² = 313261259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313261253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1248 + ... + 25061.

It is an arithmetic number, because the mean of its divisors is an integer number (15163330).

Almost surely, 2^313261263 is an apocalyptic number.

313261263 is a deficient number, since it is larger than the sum of its proper divisors (232618617).

313261263 is an equidigital number, since it uses as much as digits as its factorization.

313261263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26338 (or 26319 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 313261263 is about 17699.1882017227. The cubic root of 313261263 is about 679.1549934904.

The spelling of 313261263 in words is "three hundred thirteen million, two hundred sixty-one thousand, two hundred sixty-three".