1312232293 has 4 divisors (see below), whose sum is σ = 1318013280. Its totient is φ = 1306451308.

The previous prime is 1312232279. The next prime is 1312232297. The reversal of 1312232293 is 3922322131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312232293 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 (1312232297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2890153 + ... + 2890606.

It is an arithmetic number, because the mean of its divisors is an integer number (329503320).

Almost surely, 2^1312232293 is an apocalyptic number.

It is an amenable number.

1312232293 is a deficient number, since it is larger than the sum of its proper divisors (5780987).

1312232293 is an equidigital number, since it uses as much as digits as its factorization.

1312232293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5780986.

The product of its digits is 3888, while the sum is 28.

The square root of 1312232293 is about 36224.7469694407. The cubic root of 1312232293 is about 1094.8053400417.

The spelling of 1312232293 in words is "one billion, three hundred twelve million, two hundred thirty-two thousand, two hundred ninety-three".