113121404 has 12 divisors (see below), whose sum is σ = 215959128. Its totient is φ = 51418800.

The previous prime is 113121401. The next prime is 113121409. The reversal of 113121404 is 404121311.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113121401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1285427 + ... + 1285514.

It is an arithmetic number, because the mean of its divisors is an integer number (17996594).

Almost surely, 2^113121404 is an apocalyptic number.

It is an amenable number.

113121404 is a deficient number, since it is larger than the sum of its proper divisors (102837724).

113121404 is a wasteful number, since it uses less digits than its factorization.

113121404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570956 (or 2570954 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 113121404 is about 10635.8546436100. The cubic root of 113121404 is about 483.6318888957.

Adding to 113121404 its reverse (404121311), we get a palindrome (517242715).

The spelling of 113121404 in words is "one hundred thirteen million, one hundred twenty-one thousand, four hundred four".