11731938 has 16 divisors (see below), whose sum is σ = 24844320. Its totient is φ = 3680576.

The previous prime is 11731933. The next prime is 11731939. The reversal of 11731938 is 83913711.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11731899 and 11731908.

It is not an unprimeable number, because it can be changed into a prime (11731933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57408 + ... + 57611.

It is an arithmetic number, because the mean of its divisors is an integer number (1552770).

Almost surely, 2^11731938 is an apocalyptic number.

11731938 is an abundant number, since it is smaller than the sum of its proper divisors (13112382).

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

11731938 is a wasteful number, since it uses less digits than its factorization.

11731938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115041.

The product of its digits is 4536, while the sum is 33.

The square root of 11731938 is about 3425.1916734688. The cubic root of 11731938 is about 227.2252481571.

The spelling of 11731938 in words is "eleven million, seven hundred thirty-one thousand, nine hundred thirty-eight".