228310397 has 8 divisors (see below), whose sum is σ = 272270976. Its totient is φ = 187186032.

The previous prime is 228310367. The next prime is 228310421. The reversal of 228310397 is 793013822.

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

It is a cyclic number.

It is not a de Polignac number, because 228310397 - 2¹⁸ = 228048253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228310307) 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, 708878 + ... + 709199.

It is an arithmetic number, because the mean of its divisors is an integer number (34033872).

Almost surely, 2^228310397 is an apocalyptic number.

It is an amenable number.

228310397 is a deficient number, since it is larger than the sum of its proper divisors (43960579).

228310397 is a wasteful number, since it uses less digits than its factorization.

228310397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418107.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 228310397 is about 15109.9436464866. The cubic root of 228310397 is about 611.1885783803.

The spelling of 228310397 in words is "two hundred twenty-eight million, three hundred ten thousand, three hundred ninety-seven".