113721797 has 18 divisors (see below), whose sum is σ = 134248338. Its totient is φ = 96051648.

The previous prime is 113721791. The next prime is 113721827. The reversal of 113721797 is 797127311.

It can be written as a sum of positive squares in 3 ways, for example, as 12397441 + 101324356 = 3521^2 + 10066^2 .

It is not a de Polignac number, because 113721797 - 2⁴ = 113721781 is a prime.

It is a super-2 number, since 2×113721797² = 25865294225818418, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 113721797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113721791) 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 17 ways as a sum of consecutive naturals, for example, 387983 + ... + 388275.

It is an arithmetic number, because the mean of its divisors is an integer number (7458241).

Almost surely, 2^113721797 is an apocalyptic number.

It is an amenable number.

113721797 is a deficient number, since it is larger than the sum of its proper divisors (20526541).

113721797 is an frugal number, since it uses more digits than its factorization.

113721797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 389 counting only the distinct ones).

The product of its digits is 18522, while the sum is 38.

The square root of 113721797 is about 10664.0422448526. The cubic root of 113721797 is about 484.4860066469.

The spelling of 113721797 in words is "one hundred thirteen million, seven hundred twenty-one thousand, seven hundred ninety-seven".