113555321 has 4 divisors (see below), whose sum is σ = 123878544. Its totient is φ = 103232100.

The previous prime is 113555317. The next prime is 113555339. The reversal of 113555321 is 123555311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123555311 = 11 ⋅11232301.

It is a cyclic number.

It is not a de Polignac number, because 113555321 - 2² = 113555317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113555021) 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, 5161595 + ... + 5161616.

It is an arithmetic number, because the mean of its divisors is an integer number (30969636).

Almost surely, 2^113555321 is an apocalyptic number.

113555321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113555321 is a deficient number, since it is larger than the sum of its proper divisors (10323223).

113555321 is a wasteful number, since it uses less digits than its factorization.

113555321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10323222.

The product of its digits is 2250, while the sum is 26.

The square root of 113555321 is about 10656.2339032136. The cubic root of 113555321 is about 484.2494800724.

The spelling of 113555321 in words is "one hundred thirteen million, five hundred fifty-five thousand, three hundred twenty-one".