113421251 has 4 divisors (see below), whose sum is σ = 113830992. Its totient is φ = 113011512.

The previous prime is 113421193. The next prime is 113421271. The reversal of 113421251 is 152124311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113421251 - 2¹⁴ = 113404867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113421271) 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, 204455 + ... + 205008.

It is an arithmetic number, because the mean of its divisors is an integer number (28457748).

Almost surely, 2^113421251 is an apocalyptic number.

113421251 is a deficient number, since it is larger than the sum of its proper divisors (409741).

113421251 is an equidigital number, since it uses as much as digits as its factorization.

113421251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409740.

The product of its digits is 240, while the sum is 20.

The square root of 113421251 is about 10649.9413613409. The cubic root of 113421251 is about 484.0588273440.

Adding to 113421251 its reverse (152124311), we get a palindrome (265545562).

The spelling of 113421251 in words is "one hundred thirteen million, four hundred twenty-one thousand, two hundred fifty-one".