228323511 has 12 divisors (see below), whose sum is σ = 355170088. Its totient is φ = 140506704.

The previous prime is 228323503. The next prime is 228323519. The reversal of 228323511 is 115323822.

It is an interprime number because it is at equal distance from previous prime (228323503) and next prime (228323519).

It is not a de Polignac number, because 228323511 - 2³ = 228323503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228323519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 975625 + ... + 975858.

Almost surely, 2^228323511 is an apocalyptic number.

228323511 is a deficient number, since it is larger than the sum of its proper divisors (126846577).

228323511 is a wasteful number, since it uses less digits than its factorization.

228323511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951502 (or 1951499 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 228323511 is about 15110.3775928995. The cubic root of 228323511 is about 611.2002802471.

The spelling of 228323511 in words is "two hundred twenty-eight million, three hundred twenty-three thousand, five hundred eleven".