231323220033331 has 32 divisors (see below), whose sum is σ = 247117747548672. Its totient is φ = 216011955962880.

The previous prime is 231323220033319. The next prime is 231323220033337. The reversal of 231323220033331 is 133330022323132.

It is a cyclic number.

It is not a de Polignac number, because 231323220033331 - 2¹¹ = 231323220031283 is a prime.

It is a super-3 number, since 3×231323220033331³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231323220033293 and 231323220033302.

It is not an unprimeable number, because it can be changed into a prime (231323220033337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30266019996 + ... + 30266027638.

It is an arithmetic number, because the mean of its divisors is an integer number (7722429610896).

Almost surely, 2^{231323220033331} is an apocalyptic number.

231323220033331 is a deficient number, since it is larger than the sum of its proper divisors (15794527515341).

231323220033331 is a wasteful number, since it uses less digits than its factorization.

231323220033331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19003.

The product of its (nonzero) digits is 34992, while the sum is 31.

Adding to 231323220033331 its reverse (133330022323132), we get a palindrome (364653242356463).

The spelling of 231323220033331 in words is "two hundred thirty-one trillion, three hundred twenty-three billion, two hundred twenty million, thirty-three thousand, three hundred thirty-one".