11312997 has 4 divisors (see below), whose sum is σ = 15084000. Its totient is φ = 7541996.

The previous prime is 11312993. The next prime is 11313059. The reversal of 11312997 is 79921311.

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: 79921311 = 3 ⋅26640437.

It is a cyclic number.

It is not a de Polignac number, because 11312997 - 2² = 11312993 is a prime.

It is a super-2 number, since 2×11312997² = 255967802244018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312993) 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, 1885497 + ... + 1885502.

It is an arithmetic number, because the mean of its divisors is an integer number (3771000).

Almost surely, 2^11312997 is an apocalyptic number.

It is an amenable number.

11312997 is a deficient number, since it is larger than the sum of its proper divisors (3771003).

11312997 is an equidigital number, since it uses as much as digits as its factorization.

11312997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771002.

The product of its digits is 3402, while the sum is 33.

The square root of 11312997 is about 3363.4798943951. The cubic root of 11312997 is about 224.4877035872.

The spelling of 11312997 in words is "eleven million, three hundred twelve thousand, nine hundred ninety-seven".