1312357 has 4 divisors (see below), whose sum is σ = 1369440. Its totient is φ = 1255276.

The previous prime is 1312351. The next prime is 1312373. The reversal of 1312357 is 7532131.

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 not a de Polignac number, because 1312357 - 2⁷ = 1312229 is a prime.

It is a Duffinian number.

1312357 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312351) 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, 28507 + ... + 28552.

It is an arithmetic number, because the mean of its divisors is an integer number (342360).

2^1312357 is an apocalyptic number.

It is an amenable number.

1312357 is a deficient number, since it is larger than the sum of its proper divisors (57083).

1312357 is an equidigital number, since it uses as much as digits as its factorization.

1312357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57082.

The product of its digits is 630, while the sum is 22.

The square root of 1312357 is about 1145.5815117223. The cubic root of 1312357 is about 109.4840020275.

Adding to 1312357 its reverse (7532131), we get a palindrome (8844488).

The spelling of 1312357 in words is "one million, three hundred twelve thousand, three hundred fifty-seven".