11981310 has 32 divisors (see below), whose sum is σ = 31370112. Its totient is φ = 2904480.

The previous prime is 11981297. The next prime is 11981317. The reversal of 11981310 is 1318911.

It is a super-2 number, since 2×11981310² = 287103578632200, which contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 17824 + ... + 18483.

It is an arithmetic number, because the mean of its divisors is an integer number (980316).

Almost surely, 2^11981310 is an apocalyptic number.

11981310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11981310 is an abundant number, since it is smaller than the sum of its proper divisors (19388802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11981310 is a wasteful number, since it uses less digits than its factorization.

11981310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36328.

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 11981310 is about 3461.4028947812. The cubic root of 11981310 is about 228.8239272538.

The spelling of 11981310 in words is "eleven million, nine hundred eighty-one thousand, three hundred ten".