11731995 has 48 divisors (see below), whose sum is σ = 22475232. Its totient is φ = 5614080.

The previous prime is 11731963. The next prime is 11732003. The reversal of 11731995 is 59913711.

It is not a de Polignac number, because 11731995 - 2⁵ = 11731963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67729 + ... + 67901.

It is an arithmetic number, because the mean of its divisors is an integer number (468234).

Almost surely, 2^11731995 is an apocalyptic number.

11731995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11731995 is a deficient number, since it is larger than the sum of its proper divisors (10743237).

11731995 is a wasteful number, since it uses less digits than its factorization.

11731995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 329 counting only the distinct ones).

The product of its digits is 8505, while the sum is 36.

The square root of 11731995 is about 3425.1999941609. The cubic root of 11731995 is about 227.2256161502.

The spelling of 11731995 in words is "eleven million, seven hundred thirty-one thousand, nine hundred ninety-five".