11972317 has 6 divisors (see below), whose sum is σ = 13927038. Its totient is φ = 10261944.

The previous prime is 11972309. The next prime is 11972321. The reversal of 11972317 is 71327911.

It can be written as a sum of positive squares in only one way, i.e., 10686361 + 1285956 = 3269^2 + 1134^2 .

It is not a de Polignac number, because 11972317 - 2³ = 11972309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11972327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122118 + ... + 122215.

It is an arithmetic number, because the mean of its divisors is an integer number (2321173).

Almost surely, 2^11972317 is an apocalyptic number.

It is an amenable number.

11972317 is a deficient number, since it is larger than the sum of its proper divisors (1954721).

11972317 is an equidigital number, since it uses as much as digits as its factorization.

11972317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244347 (or 244340 counting only the distinct ones).

The product of its digits is 2646, while the sum is 31.

The square root of 11972317 is about 3460.1036111654. The cubic root of 11972317 is about 228.7666622678.

The spelling of 11972317 in words is "eleven million, nine hundred seventy-two thousand, three hundred seventeen".