131111404 has 12 divisors (see below), whose sum is σ = 229660704. Its totient is φ = 65494064.

The previous prime is 131111389. The next prime is 131111437. The reversal of 131111404 is 404111131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10447 + ... + 19270.

It is an arithmetic number, because the mean of its divisors is an integer number (19138392).

Almost surely, 2^131111404 is an apocalyptic number.

It is an amenable number.

131111404 is a deficient number, since it is larger than the sum of its proper divisors (98549300).

131111404 is a wasteful number, since it uses less digits than its factorization.

131111404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30824 (or 30822 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 131111404 is about 11450.3888143591. The cubic root of 131111404 is about 508.0192348102.

Adding to 131111404 its reverse (404111131), we get a palindrome (535222535).

The spelling of 131111404 in words is "one hundred thirty-one million, one hundred eleven thousand, four hundred four".