232031133221 has 2 divisors, whose sum is σ = 232031133222. Its totient is φ = 232031133220.

The previous prime is 232031133203. The next prime is 232031133223. The reversal of 232031133221 is 122331130232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204511972900 + 27519160321 = 452230^2 + 165889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232031133221 is a prime.

Together with 232031133223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232031133223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116015566610 + 116015566611.

It is an arithmetic number, because the mean of its divisors is an integer number (116015566611).

Almost surely, 2^232031133221 is an apocalyptic number.

It is an amenable number.

232031133221 is a deficient number, since it is larger than the sum of its proper divisors (1).

232031133221 is an equidigital number, since it uses as much as digits as its factorization.

232031133221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 232031133221 its reverse (122331130232), we get a palindrome (354362263453).

It can be divided in two parts, 2320311 and 33221, that added together give a palindrome (2353532).

The spelling of 232031133221 in words is "two hundred thirty-two billion, thirty-one million, one hundred thirty-three thousand, two hundred twenty-one".