2332431221 has 2 divisors, whose sum is σ = 2332431222. Its totient is φ = 2332431220.

The previous prime is 2332431217. The next prime is 2332431239. The reversal of 2332431221 is 1221342332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1502415121 + 830016100 = 38761^2 + 28810^2 .

It is a cyclic number.

It is not a de Polignac number, because 2332431221 - 2² = 2332431217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2332431421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1166215610 + 1166215611.

It is an arithmetic number, because the mean of its divisors is an integer number (1166215611).

Almost surely, 2^2332431221 is an apocalyptic number.

It is an amenable number.

2332431221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2332431221 is an equidigital number, since it uses as much as digits as its factorization.

2332431221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 2332431221 is about 48295.2505014727. The cubic root of 2332431221 is about 1326.1814493331.

Adding to 2332431221 its reverse (1221342332), we get a palindrome (3553773553).

Subtracting from 2332431221 its reverse (1221342332), we obtain a square (1111088889 = 33333²).

It can be divided in two parts, 23324 and 31221, that added together give a palindrome (54545).

The spelling of 2332431221 in words is "two billion, three hundred thirty-two million, four hundred thirty-one thousand, two hundred twenty-one".