11931902 has 8 divisors (see below), whose sum is σ = 18334512. Its totient is φ = 5820400.

The previous prime is 11931901. The next prime is 11931919. The reversal of 11931902 is 20913911.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11931901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72674 + ... + 72837.

It is an arithmetic number, because the mean of its divisors is an integer number (2291814).

Almost surely, 2^11931902 is an apocalyptic number.

11931902 is a deficient number, since it is larger than the sum of its proper divisors (6402610).

11931902 is a wasteful number, since it uses less digits than its factorization.

11931902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145554.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 11931902 is about 3454.2585311467. The cubic root of 11931902 is about 228.5089558805.

Subtracting 11931902 from its reverse (20913911), we obtain a square (8982009 = 2997²).

The spelling of 11931902 in words is "eleven million, nine hundred thirty-one thousand, nine hundred two".