229173731 has 4 divisors (see below), whose sum is σ = 236566464. Its totient is φ = 221781000.

The previous prime is 229173713. The next prime is 229173733. The reversal of 229173731 is 137371922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137371922 = 2 ⋅68685961.

It is a cyclic number.

It is not a de Polignac number, because 229173731 - 2⁶ = 229173667 is a prime.

It is a super-2 number, since 2×229173731² = 105041197960920722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 229173691 and 229173700.

It is not an unprimeable number, because it can be changed into a prime (229173733) 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, 3696320 + ... + 3696381.

It is an arithmetic number, because the mean of its divisors is an integer number (59141616).

Almost surely, 2^229173731 is an apocalyptic number.

229173731 is a deficient number, since it is larger than the sum of its proper divisors (7392733).

229173731 is an equidigital number, since it uses as much as digits as its factorization.

229173731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7392732.

The product of its digits is 15876, while the sum is 35.

The square root of 229173731 is about 15138.4850959401. The cubic root of 229173731 is about 611.9579931511.

The spelling of 229173731 in words is "two hundred twenty-nine million, one hundred seventy-three thousand, seven hundred thirty-one".