232311010031221 has 4 divisors (see below), whose sum is σ = 253430192761344. Its totient is φ = 211191827301100.

The previous prime is 232311010031189. The next prime is 232311010031227. The reversal of 232311010031221 is 122130010113232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 232311010031221 - 2⁵ = 232311010031189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232311010031192 and 232311010031201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232311010031227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10559591365045 + ... + 10559591365066.

It is an arithmetic number, because the mean of its divisors is an integer number (63357548190336).

Almost surely, 2^{232311010031221} is an apocalyptic number.

It is an amenable number.

232311010031221 is a deficient number, since it is larger than the sum of its proper divisors (21119182730123).

232311010031221 is a wasteful number, since it uses less digits than its factorization.

232311010031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21119182730122.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 232311010031221 its reverse (122130010113232), we get a palindrome (354441020144453).

The spelling of 232311010031221 in words is "two hundred thirty-two trillion, three hundred eleven billion, ten million, thirty-one thousand, two hundred twenty-one".