231230021332 has 24 divisors (see below), whose sum is σ = 416280748520. Its totient is φ = 112303065600.

The previous prime is 231230021317. The next prime is 231230021333. The reversal of 231230021332 is 233120032132.

It can be written as a sum of positive squares in 4 ways, for example, as 119029140036 + 112200881296 = 345006^2 + 334964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231230021333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1210857 + ... + 1388752.

Almost surely, 2^231230021332 is an apocalyptic number.

It is an amenable number.

231230021332 is a deficient number, since it is larger than the sum of its proper divisors (185050727188).

231230021332 is a wasteful number, since it uses less digits than its factorization.

231230021332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600251 (or 2600249 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 231230021332 its reverse (233120032132), we get a palindrome (464350053464).

The spelling of 231230021332 in words is "two hundred thirty-one billion, two hundred thirty million, twenty-one thousand, three hundred thirty-two".