1312263085 has 8 divisors (see below), whose sum is σ = 1799675136. Its totient is φ = 899837520.

The previous prime is 1312263067. The next prime is 1312263089. The reversal of 1312263085 is 5803622131.

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

It is not a de Polignac number, because 1312263085 - 2⁷ = 1312262957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312263089) 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, 18746581 + ... + 18746650.

It is an arithmetic number, because the mean of its divisors is an integer number (224959392).

Almost surely, 2^1312263085 is an apocalyptic number.

It is an amenable number.

1312263085 is a deficient number, since it is larger than the sum of its proper divisors (487412051).

1312263085 is an equidigital number, since it uses as much as digits as its factorization.

1312263085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37493243.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1312263085 is about 36225.1719802681. The cubic root of 1312263085 is about 1094.8139033077.

The spelling of 1312263085 in words is "one billion, three hundred twelve million, two hundred sixty-three thousand, eighty-five".