31232033012231 has 4 divisors (see below), whose sum is σ = 31232740896552. Its totient is φ = 31231325127912.

The previous prime is 31232033012209. The next prime is 31232033012293. The reversal of 31232033012231 is 13221033023213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31232033012231 is a prime.

It is a super-2 number, since 2×31232033012231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31232033012231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232033017231) 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, 353875976 + ... + 353964221.

It is an arithmetic number, because the mean of its divisors is an integer number (7808185224138).

Almost surely, 2^{31232033012231} is an apocalyptic number.

31232033012231 is a deficient number, since it is larger than the sum of its proper divisors (707884321).

31232033012231 is an equidigital number, since it uses as much as digits as its factorization.

31232033012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707884320.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 31232033012231 its reverse (13221033023213), we get a palindrome (44453066035444).

The spelling of 31232033012231 in words is "thirty-one trillion, two hundred thirty-two billion, thirty-three million, twelve thousand, two hundred thirty-one".