1312311294 has 96 divisors (see below), whose sum is σ = 3568271616. Its totient is φ = 352874880.

The previous prime is 1312311283. The next prime is 1312311317. The reversal of 1312311294 is 4921132131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46489 + ... + 69179.

It is an arithmetic number, because the mean of its divisors is an integer number (37169496).

Almost surely, 2^1312311294 is an apocalyptic number.

1312311294 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312311294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1784135808).

1312311294 is an abundant number, since it is smaller than the sum of its proper divisors (2255960322).

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

1312311294 is a wasteful number, since it uses less digits than its factorization.

1312311294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22732 (or 22720 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1312311294 is about 36225.8373816258. The cubic root of 1312311294 is about 1094.8273099784.

The spelling of 1312311294 in words is "one billion, three hundred twelve million, three hundred eleven thousand, two hundred ninety-four".