1313157 has 4 divisors (see below), whose sum is σ = 1750880. Its totient is φ = 875436.

The previous prime is 1313153. The next prime is 1313161. The reversal of 1313157 is 7513131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7513131 = 3 ⋅2504377.

It is an interprime number because it is at equal distance from previous prime (1313153) and next prime (1313161).

It is not a de Polignac number, because 1313157 - 2² = 1313153 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218857 + ... + 218862.

It is an arithmetic number, because the mean of its divisors is an integer number (437720).

2^1313157 is an apocalyptic number.

It is an amenable number.

1313157 is a deficient number, since it is larger than the sum of its proper divisors (437723).

1313157 is an equidigital number, since it uses as much as digits as its factorization.

1313157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437722.

The product of its digits is 315, while the sum is 21.

The square root of 1313157 is about 1145.9306261725. The cubic root of 1313157 is about 109.5062443010.

Adding to 1313157 its reverse (7513131), we get a palindrome (8826288).

The spelling of 1313157 in words is "one million, three hundred thirteen thousand, one hundred fifty-seven".