228358312623 has 36 divisors (see below), whose sum is σ = 406274946480. Its totient is φ = 122814550656.

The previous prime is 228358312607. The next prime is 228358312627. The reversal of 228358312623 is 326213853822.

228358312623 is a `hidden beast` number, since 2 + 2 + 8 + 3 + 5 + 8 + 3 + 12 + 623 = 666.

It is not a de Polignac number, because 228358312623 - 2⁴ = 228358312607 is a prime.

It is a super-2 number, since 2×228358312623² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228358312627) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15222483 + ... + 15237476.

It is an arithmetic number, because the mean of its divisors is an integer number (11285415180).

Almost surely, 2^228358312623 is an apocalyptic number.

228358312623 is a deficient number, since it is larger than the sum of its proper divisors (177916633857).

228358312623 is a wasteful number, since it uses less digits than its factorization.

228358312623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30459996 (or 30459986 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 228358312623 in words is "two hundred twenty-eight billion, three hundred fifty-eight million, three hundred twelve thousand, six hundred twenty-three".