12313151 has 4 divisors (see below), whose sum is σ = 13037472. Its totient is φ = 11588832.

The previous prime is 12313141. The next prime is 12313157. The reversal of 12313151 is 15131321.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-12313151 is a prime.

It is a super-2 number, since 2×12313151² = 303227375097602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 724303 = 12313151 / (1 + 2 + 3 + 1 + 3 + 1 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313157) 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, 362135 + ... + 362168.

It is an arithmetic number, because the mean of its divisors is an integer number (3259368).

Almost surely, 2^12313151 is an apocalyptic number.

12313151 is a deficient number, since it is larger than the sum of its proper divisors (724321).

12313151 is an equidigital number, since it uses as much as digits as its factorization.

12313151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724320.

The product of its digits is 90, while the sum is 17.

The square root of 12313151 is about 3509.0099743375. The cubic root of 12313151 is about 230.9172632742.

Adding to 12313151 its reverse (15131321), we get a palindrome (27444472).

The spelling of 12313151 in words is "twelve million, three hundred thirteen thousand, one hundred fifty-one".