231532621052433 has 32 divisors (see below), whose sum is σ = 315598597816320. Its totient is φ = 150917598810240.

The previous prime is 231532621052423. The next prime is 231532621052441. The reversal of 231532621052433 is 334250126235132.

It is not a de Polignac number, because 231532621052433 - 2⁵ = 231532621052401 is a prime.

It is a super-2 number, since 2×231532621052433² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231532621052423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 645493968 + ... + 645852558.

It is an arithmetic number, because the mean of its divisors is an integer number (9862456181760).

Almost surely, 2^{231532621052433} is an apocalyptic number.

It is an amenable number.

231532621052433 is a deficient number, since it is larger than the sum of its proper divisors (84065976763887).

231532621052433 is a wasteful number, since it uses less digits than its factorization.

231532621052433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363277.

The product of its (nonzero) digits is 777600, while the sum is 42.

Adding to 231532621052433 its reverse (334250126235132), we get a palindrome (565782747287565).

The spelling of 231532621052433 in words is "two hundred thirty-one trillion, five hundred thirty-two billion, six hundred twenty-one million, fifty-two thousand, four hundred thirty-three".