229913881 has 2 divisors, whose sum is σ = 229913882. Its totient is φ = 229913880.

The previous prime is 229913863. The next prime is 229913909. The reversal of 229913881 is 188319922.

229913881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212139225 + 17774656 = 14565^2 + 4216^2 .

It is a cyclic number.

It is not a de Polignac number, because 229913881 - 2⁷ = 229913753 is a prime.

It is a super-2 number, since 2×229913881² = 105720785352964322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (229913821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114956940 + 114956941.

It is an arithmetic number, because the mean of its divisors is an integer number (114956941).

Almost surely, 2^229913881 is an apocalyptic number.

It is an amenable number.

229913881 is a deficient number, since it is larger than the sum of its proper divisors (1).

229913881 is an equidigital number, since it uses as much as digits as its factorization.

229913881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 43.

The square root of 229913881 is about 15162.9113629276. The cubic root of 229913881 is about 612.6160877284.

The spelling of 229913881 in words is "two hundred twenty-nine million, nine hundred thirteen thousand, eight hundred eighty-one".