229201331 has 2 divisors, whose sum is σ = 229201332. Its totient is φ = 229201330.

The previous prime is 229201307. The next prime is 229201333. The reversal of 229201331 is 133102922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229201331 is a prime.

It is a super-2 number, since 2×229201331² = 105066500264343122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 229201333, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 229201297 and 229201306.

It is not a weakly prime, because it can be changed into another prime (229201333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114600665 + 114600666.

It is an arithmetic number, because the mean of its divisors is an integer number (114600666).

Almost surely, 2^229201331 is an apocalyptic number.

229201331 is a deficient number, since it is larger than the sum of its proper divisors (1).

229201331 is an equidigital number, since it uses as much as digits as its factorization.

229201331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 229201331 is about 15139.3966524429. The cubic root of 229201331 is about 611.9825587394.

The spelling of 229201331 in words is "two hundred twenty-nine million, two hundred one thousand, three hundred thirty-one".