113232421 has 2 divisors, whose sum is σ = 113232422. Its totient is φ = 113232420.

The previous prime is 113232397. The next prime is 113232437. The reversal of 113232421 is 124232311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113188321 + 44100 = 10639^2 + 210^2 .

It is a cyclic number.

It is not a de Polignac number, because 113232421 - 2⁵ = 113232389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113236421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56616210 + 56616211.

It is an arithmetic number, because the mean of its divisors is an integer number (56616211).

Almost surely, 2^113232421 is an apocalyptic number.

It is an amenable number.

113232421 is a deficient number, since it is larger than the sum of its proper divisors (1).

113232421 is an equidigital number, since it uses as much as digits as its factorization.

113232421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 113232421 is about 10641.0723613741. The cubic root of 113232421 is about 483.7900487868.

Adding to 113232421 its reverse (124232311), we get a palindrome (237464732).

The spelling of 113232421 in words is "one hundred thirteen million, two hundred thirty-two thousand, four hundred twenty-one".