231330133021 has 8 divisors (see below), whose sum is σ = 262236588320. Its totient is φ = 202296796272.

The previous prime is 231330132997. The next prime is 231330133061. The reversal of 231330133021 is 120331033132.

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

It is a cyclic number.

It is not a de Polignac number, because 231330133021 - 2¹³ = 231330124829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231330132983 and 231330133001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231330133061) 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, 468279375 + ... + 468279868.

It is an arithmetic number, because the mean of its divisors is an integer number (32779573540).

Almost surely, 2^231330133021 is an apocalyptic number.

It is an amenable number.

231330133021 is a deficient number, since it is larger than the sum of its proper divisors (30906455299).

231330133021 is a wasteful number, since it uses less digits than its factorization.

231330133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936559275.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 231330133021 its reverse (120331033132), we get a palindrome (351661166153).

The spelling of 231330133021 in words is "two hundred thirty-one billion, three hundred thirty million, one hundred thirty-three thousand, twenty-one".