113801721 has 8 divisors (see below), whose sum is σ = 165529824. Its totient is φ = 68970720.

The previous prime is 113801687. The next prime is 113801729. The reversal of 113801721 is 127108311.

It is a happy number.

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

It is not a de Polignac number, because 113801721 - 2⁷ = 113801593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113801691 and 113801700.

It is not an unprimeable number, because it can be changed into a prime (113801729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1724236 + ... + 1724301.

It is an arithmetic number, because the mean of its divisors is an integer number (20691228).

Almost surely, 2^113801721 is an apocalyptic number.

113801721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113801721 is a deficient number, since it is larger than the sum of its proper divisors (51728103).

113801721 is a wasteful number, since it uses less digits than its factorization.

113801721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448551.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 113801721 is about 10667.7889461687. The cubic root of 113801721 is about 484.5994794458.

The spelling of 113801721 in words is "one hundred thirteen million, eight hundred one thousand, seven hundred twenty-one".