113421231 has 72 divisors (see below), whose sum is σ = 210847104. Its totient is φ = 58091040.

The previous prime is 113421193. The next prime is 113421271. The reversal of 113421231 is 132124311.

113421231 is a `hidden beast` number, since 1 + 13 + 421 + 231 = 666.

It is not a de Polignac number, because 113421231 - 2⁶ = 113421167 is a prime.

It is a super-2 number, since 2×113421231² = 25728751283110722, which contains 22 as substring.

It is a congruent 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 71 ways as a sum of consecutive naturals, for example, 499540 + ... + 499766.

It is an arithmetic number, because the mean of its divisors is an integer number (2928432).

Almost surely, 2^113421231 is an apocalyptic number.

113421231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113421231 is a deficient number, since it is larger than the sum of its proper divisors (97425873).

113421231 is a wasteful number, since it uses less digits than its factorization.

113421231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 351 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 113421231 is about 10649.9404223686. The cubic root of 113421231 is about 484.0587988921.

Adding to 113421231 its reverse (132124311), we get a palindrome (245545542).

The spelling of 113421231 in words is "one hundred thirteen million, four hundred twenty-one thousand, two hundred thirty-one".