113421531 has 8 divisors (see below), whose sum is σ = 151441920. Its totient is φ = 75507752.

The previous prime is 113421521. The next prime is 113421563. The reversal of 113421531 is 135124311.

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

It is a cyclic number.

It is not a de Polignac number, because 113421531 - 2⁵ = 113421499 is a prime.

It is a super-2 number, since 2×113421531² = 25728887388767922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113421498 and 113421507.

It is not an unprimeable number, because it can be changed into a prime (113421521) 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, 24135 + ... + 28448.

It is an arithmetic number, because the mean of its divisors is an integer number (18930240).

Almost surely, 2^113421531 is an apocalyptic number.

113421531 is a deficient number, since it is larger than the sum of its proper divisors (38020389).

113421531 is an equidigital number, since it uses as much as digits as its factorization.

113421531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53305.

The product of its digits is 360, while the sum is 21.

The square root of 113421531 is about 10649.9545069451. The cubic root of 113421531 is about 484.0592256714.

Adding to 113421531 its reverse (135124311), we get a palindrome (248545842).

The spelling of 113421531 in words is "one hundred thirteen million, four hundred twenty-one thousand, five hundred thirty-one".