229597431 has 32 divisors (see below), whose sum is σ = 372003840. Its totient is φ = 123112704.

The previous prime is 229597429. The next prime is 229597451. The reversal of 229597431 is 134795922.

It is not a de Polignac number, because 229597431 - 2¹ = 229597429 is a prime.

It is a super-2 number, since 2×229597431² = 105429960643599522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229597411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21115 + ... + 30083.

It is an arithmetic number, because the mean of its divisors is an integer number (11625120).

Almost surely, 2^229597431 is an apocalyptic number.

229597431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

229597431 is a deficient number, since it is larger than the sum of its proper divisors (142406409).

229597431 is a wasteful number, since it uses less digits than its factorization.

229597431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055.

The product of its digits is 136080, while the sum is 42.

The square root of 229597431 is about 15152.4727684956. The cubic root of 229597431 is about 612.3348934957.

The spelling of 229597431 in words is "two hundred twenty-nine million, five hundred ninety-seven thousand, four hundred thirty-one".