11947331 has 8 divisors (see below), whose sum is σ = 13134528. Its totient is φ = 10777000.

The previous prime is 11947321. The next prime is 11947339. The reversal of 11947331 is 13374911.

It is a happy number.

11947331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11947331 is a prime.

It is a super-2 number, since 2×11947331² = 285477436047122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11947294 and 11947303.

It is not an unprimeable number, because it can be changed into a prime (11947339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2705 + ... + 5586.

It is an arithmetic number, because the mean of its divisors is an integer number (1641816).

Almost surely, 2^11947331 is an apocalyptic number.

11947331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11947331 is a deficient number, since it is larger than the sum of its proper divisors (1187197).

11947331 is a wasteful number, since it uses less digits than its factorization.

11947331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8433.

The product of its digits is 2268, while the sum is 29.

The square root of 11947331 is about 3456.4911398700. The cubic root of 11947331 is about 228.6074075246.

The spelling of 11947331 in words is "eleven million, nine hundred forty-seven thousand, three hundred thirty-one".