226431146591 has 4 divisors (see below), whose sum is σ = 243848927112. Its totient is φ = 209013366072.

The previous prime is 226431146569. The next prime is 226431146597. The reversal of 226431146591 is 195641134622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 226431146591 - 2¹⁴ = 226431130207 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 (226431146597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8708890241 + ... + 8708890266.

It is an arithmetic number, because the mean of its divisors is an integer number (60962231778).

Almost surely, 2^226431146591 is an apocalyptic number.

226431146591 is a deficient number, since it is larger than the sum of its proper divisors (17417780521).

226431146591 is a wasteful number, since it uses less digits than its factorization.

226431146591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17417780520.

The product of its digits is 311040, while the sum is 44.

The spelling of 226431146591 in words is "two hundred twenty-six billion, four hundred thirty-one million, one hundred forty-six thousand, five hundred ninety-one".