11312761 has 4 divisors (see below), whose sum is σ = 11588724. Its totient is φ = 11036800.

The previous prime is 11312731. The next prime is 11312801. The reversal of 11312761 is 16721311.

11312761 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16721311 = 19 ⋅880069.

It can be written as a sum of positive squares in 2 ways, for example, as 3444736 + 7868025 = 1856^2 + 2805^2 .

It is a cyclic number.

It is not a de Polignac number, because 11312761 - 2⁵ = 11312729 is a prime.

It is a super-2 number, since 2×11312761² = 255957122886242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11312731) 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, 137920 + ... + 138001.

It is an arithmetic number, because the mean of its divisors is an integer number (2897181).

Almost surely, 2^11312761 is an apocalyptic number.

It is an amenable number.

11312761 is a deficient number, since it is larger than the sum of its proper divisors (275963).

11312761 is an equidigital number, since it uses as much as digits as its factorization.

11312761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275962.

The product of its digits is 252, while the sum is 22.

The square root of 11312761 is about 3363.4448114991. Note that the first 3 decimals coincide. The cubic root of 11312761 is about 224.4861425666.

The spelling of 11312761 in words is "eleven million, three hundred twelve thousand, seven hundred sixty-one".