228140623 has 2 divisors, whose sum is σ = 228140624. Its totient is φ = 228140622.

The previous prime is 228140599. The next prime is 228140639. The reversal of 228140623 is 326041822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228140623 - 2²⁵ = 194586191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228140591 and 228140600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228140683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114070311 + 114070312.

It is an arithmetic number, because the mean of its divisors is an integer number (114070312).

Almost surely, 2^228140623 is an apocalyptic number.

228140623 is a deficient number, since it is larger than the sum of its proper divisors (1).

228140623 is an equidigital number, since it uses as much as digits as its factorization.

228140623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 228140623 is about 15104.3246456106. The cubic root of 228140623 is about 611.0370454063.

The spelling of 228140623 in words is "two hundred twenty-eight million, one hundred forty thousand, six hundred twenty-three".