226431397 has 8 divisors (see below), whose sum is σ = 234564120. Its totient is φ = 218423040.

The previous prime is 226431349. The next prime is 226431427. The reversal of 226431397 is 793134622.

It can be written as a sum of positive squares in 4 ways, for example, as 4004001 + 222427396 = 2001^2 + 14914^2 .

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 226431397 - 2¹¹ = 226429349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226431697) 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, 27378 + ... + 34675.

It is an arithmetic number, because the mean of its divisors is an integer number (29320515).

Almost surely, 2^226431397 is an apocalyptic number.

It is an amenable number.

226431397 is a deficient number, since it is larger than the sum of its proper divisors (8132723).

226431397 is an equidigital number, since it uses as much as digits as its factorization.

226431397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62183.

The product of its digits is 54432, while the sum is 37.

The square root of 226431397 is about 15047.6375886715. The cubic root of 226431397 is about 609.5072586281.

The spelling of 226431397 in words is "two hundred twenty-six million, four hundred thirty-one thousand, three hundred ninety-seven".