228311553 has 16 divisors (see below), whose sum is σ = 312494336. Its totient is φ = 148191120.

The previous prime is 228311549. The next prime is 228311557. The reversal of 228311553 is 355113822.

It is an interprime number because it is at equal distance from previous prime (228311549) and next prime (228311557).

It is not a de Polignac number, because 228311553 - 2² = 228311549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 228311553.

It is not an unprimeable number, because it can be changed into a prime (228311557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40026 + ... + 45372.

It is an arithmetic number, because the mean of its divisors is an integer number (19530896).

Almost surely, 2^228311553 is an apocalyptic number.

It is an amenable number.

228311553 is a deficient number, since it is larger than the sum of its proper divisors (84182783).

228311553 is a wasteful number, since it uses less digits than its factorization.

228311553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5724.

The product of its digits is 7200, while the sum is 30.

The square root of 228311553 is about 15109.9818993935. The cubic root of 228311553 is about 611.1896099186.

The spelling of 228311553 in words is "two hundred twenty-eight million, three hundred eleven thousand, five hundred fifty-three".