229431 has 8 divisors (see below), whose sum is σ = 315904. Its totient is φ = 147960.

The previous prime is 229423. The next prime is 229433. The reversal of 229431 is 134922.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 229431 - 2³ = 229423 is a prime.

It is a super-2 number, since 2×229431² = 105277167522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 229398 and 229407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229433) 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, 1141 + ... + 1326.

It is an arithmetic number, because the mean of its divisors is an integer number (39488).

2²²⁹⁴³¹ is an apocalyptic number.

229431 is a deficient number, since it is larger than the sum of its proper divisors (86473).

229431 is a wasteful number, since it uses less digits than its factorization.

229431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501.

The product of its digits is 432, while the sum is 21.

The square root of 229431 is about 478.9895614729. The cubic root of 229431 is about 61.2186900923.

It can be divided in two parts, 22 and 9431, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 229431 in words is "two hundred twenty-nine thousand, four hundred thirty-one".