229240731 has 4 divisors (see below), whose sum is σ = 305654312. Its totient is φ = 152827152.

The previous prime is 229240729. The next prime is 229240751. The reversal of 229240731 is 137042922.

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

It is not a de Polignac number, because 229240731 - 2¹ = 229240729 is a prime.

It is a super-2 number, since 2×229240731² = 105102625498828722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229240751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38206786 + ... + 38206791.

It is an arithmetic number, because the mean of its divisors is an integer number (76413578).

Almost surely, 2^229240731 is an apocalyptic number.

229240731 is a deficient number, since it is larger than the sum of its proper divisors (76413581).

229240731 is an equidigital number, since it uses as much as digits as its factorization.

229240731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76413580.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 229240731 is about 15140.6978372861. The cubic root of 229240731 is about 612.0176235901.

The spelling of 229240731 in words is "two hundred twenty-nine million, two hundred forty thousand, seven hundred thirty-one".