229219731 has 24 divisors (see below), whose sum is σ = 358446816. Its totient is φ = 140313600.

The previous prime is 229219729. The next prime is 229219733. The reversal of 229219731 is 137912922.

It is an interprime number because it is at equal distance from previous prime (229219729) and next prime (229219733).

It is not a de Polignac number, because 229219731 - 2¹ = 229219729 is a prime.

It is a super-2 number, since 2×229219731² = 105083370159424722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (229219733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17506 + ... + 27656.

It is an arithmetic number, because the mean of its divisors is an integer number (14935284).

Almost surely, 2^229219731 is an apocalyptic number.

229219731 is a deficient number, since it is larger than the sum of its proper divisors (129227085).

229219731 is a wasteful number, since it uses less digits than its factorization.

229219731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10363 (or 10360 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 229219731 is about 15140.0043262874. The cubic root of 229219731 is about 611.9989347027.

The spelling of 229219731 in words is "two hundred twenty-nine million, two hundred nineteen thousand, seven hundred thirty-one".