231043332251 has 8 divisors (see below), whose sum is σ = 231811164624. Its totient is φ = 230275987200.

The previous prime is 231043332241. The next prime is 231043332263. The reversal of 231043332251 is 152233340132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231043332251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231043332211) 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, 840551 + ... + 1081023.

It is an arithmetic number, because the mean of its divisors is an integer number (28976395578).

Almost surely, 2^231043332251 is an apocalyptic number.

231043332251 is a deficient number, since it is larger than the sum of its proper divisors (767832373).

231043332251 is a wasteful number, since it uses less digits than its factorization.

231043332251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243661.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 231043332251 its reverse (152233340132), we get a palindrome (383276672383).

The spelling of 231043332251 in words is "two hundred thirty-one billion, forty-three million, three hundred thirty-two thousand, two hundred fifty-one".