231513450033533 has 16 divisors (see below), whose sum is σ = 247491234660096. Its totient is φ = 216029195141760.

The previous prime is 231513450033527. The next prime is 231513450033563. The reversal of 231513450033533 is 335330054315132.

It is a cyclic number.

It is not a de Polignac number, because 231513450033533 - 2¹⁸ = 231513449771389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231513450033563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1972391 + ... + 21608267.

It is an arithmetic number, because the mean of its divisors is an integer number (15468202166256).

Almost surely, 2^{231513450033533} is an apocalyptic number.

231513450033533 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

231513450033533 is a deficient number, since it is larger than the sum of its proper divisors (15977784626563).

231513450033533 is a wasteful number, since it uses less digits than its factorization.

231513450033533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19648444.

The product of its (nonzero) digits is 729000, while the sum is 41.

The spelling of 231513450033533 in words is "two hundred thirty-one trillion, five hundred thirteen billion, four hundred fifty million, thirty-three thousand, five hundred thirty-three".