228831497 has 4 divisors (see below), whose sum is σ = 240875280. Its totient is φ = 216787716.

The previous prime is 228831487. The next prime is 228831523. The reversal of 228831497 is 794138822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228831497 - 2¹⁶ = 228765961 is a prime.

It is a super-2 number, since 2×228831497² = 104727708038522018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228831437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6021863 + ... + 6021900.

It is an arithmetic number, because the mean of its divisors is an integer number (60218820).

Almost surely, 2^228831497 is an apocalyptic number.

It is an amenable number.

228831497 is a deficient number, since it is larger than the sum of its proper divisors (12043783).

228831497 is a wasteful number, since it uses less digits than its factorization.

228831497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12043782.

The product of its digits is 193536, while the sum is 44.

The square root of 228831497 is about 15127.1774300429. The cubic root of 228831497 is about 611.6532212081.

The spelling of 228831497 in words is "two hundred twenty-eight million, eight hundred thirty-one thousand, four hundred ninety-seven".