229912031 has 2 divisors, whose sum is σ = 229912032. Its totient is φ = 229912030.

The previous prime is 229912003. The next prime is 229912091. The reversal of 229912031 is 130219922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 229912031 - 2¹⁸ = 229649887 is a prime.

It is a super-2 number, since 2×229912031² = 105719083997089922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 229911985 and 229912003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229912091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114956015 + 114956016.

It is an arithmetic number, because the mean of its divisors is an integer number (114956016).

Almost surely, 2^229912031 is an apocalyptic number.

229912031 is a deficient number, since it is larger than the sum of its proper divisors (1).

229912031 is an equidigital number, since it uses as much as digits as its factorization.

229912031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 229912031 is about 15162.8503586892. The cubic root of 229912031 is about 612.6144445874.

The spelling of 229912031 in words is "two hundred twenty-nine million, nine hundred twelve thousand, thirty-one".