228931011 has 12 divisors (see below), whose sum is σ = 338368888. Its totient is φ = 149071104.

The previous prime is 228931007. The next prime is 228931013. The reversal of 228931011 is 110139822.

228931011 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 228931011 - 2² = 228931007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228931013) 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, 295390 + ... + 296163.

Almost surely, 2^228931011 is an apocalyptic number.

228931011 is a deficient number, since it is larger than the sum of its proper divisors (109437877).

228931011 is a wasteful number, since it uses less digits than its factorization.

228931011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591602 (or 591599 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 228931011 is about 15130.4663179956. The cubic root of 228931011 is about 611.7418733942.

The spelling of 228931011 in words is "two hundred twenty-eight million, nine hundred thirty-one thousand, eleven".