231012032021 has 8 divisors (see below), whose sum is σ = 237650391384. Its totient is φ = 224394451200.

The previous prime is 231012031997. The next prime is 231012032029. The reversal of 231012032021 is 120230210132.

It can be written as a sum of positive squares in 4 ways, for example, as 44137387921 + 186874644100 = 210089^2 + 432290^2 .

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-231012032021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231012032029) 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, 5172080 + ... + 5216553.

It is an arithmetic number, because the mean of its divisors is an integer number (29706298923).

Almost surely, 2^231012032021 is an apocalyptic number.

It is an amenable number.

231012032021 is a deficient number, since it is larger than the sum of its proper divisors (6638359363).

231012032021 is a wasteful number, since it uses less digits than its factorization.

231012032021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10389271.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 231012032021 its reverse (120230210132), we get a palindrome (351242242153).

The spelling of 231012032021 in words is "two hundred thirty-one billion, twelve million, thirty-two thousand, twenty-one".