226131421 has 2 divisors, whose sum is σ = 226131422. Its totient is φ = 226131420.

The previous prime is 226131413. The next prime is 226131439. The reversal of 226131421 is 124131622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214476025 + 11655396 = 14645^2 + 3414^2 .

It is a cyclic number.

It is not a de Polignac number, because 226131421 - 2³ = 226131413 is a prime.

It is a super-2 number, since 2×226131421² = 102270839126958482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 226131392 and 226131401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226131401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113065710 + 113065711.

It is an arithmetic number, because the mean of its divisors is an integer number (113065711).

Almost surely, 2^226131421 is an apocalyptic number.

It is an amenable number.

226131421 is a deficient number, since it is larger than the sum of its proper divisors (1).

226131421 is an equidigital number, since it uses as much as digits as its factorization.

226131421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 226131421 is about 15037.6667405552. Note that the first 3 decimals coincide. The cubic root of 226131421 is about 609.2379815574.

The spelling of 226131421 in words is "two hundred twenty-six million, one hundred thirty-one thousand, four hundred twenty-one".