11981307 has 32 divisors (see below), whose sum is σ = 18063360. Its totient is φ = 7015680.

The previous prime is 11981297. The next prime is 11981317. The reversal of 11981307 is 70318911.

It is an interprime number because it is at equal distance from previous prime (11981297) and next prime (11981317).

It is not a de Polignac number, because 11981307 - 2¹⁸ = 11719163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11981317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94278 + ... + 94404.

It is an arithmetic number, because the mean of its divisors is an integer number (564480).

Almost surely, 2^11981307 is an apocalyptic number.

11981307 is a deficient number, since it is larger than the sum of its proper divisors (6082053).

11981307 is a wasteful number, since it uses less digits than its factorization.

11981307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 11981307 is about 3461.4024614309. The cubic root of 11981307 is about 228.8239081554.

The spelling of 11981307 in words is "eleven million, nine hundred eighty-one thousand, three hundred seven".