231545430403133 has 32 divisors (see below), whose sum is σ = 293357660602368. Its totient is φ = 179004340413360.

The previous prime is 231545430403117. The next prime is 231545430403139. The reversal of 231545430403133 is 331304034545132.

It is not a de Polignac number, because 231545430403133 - 2⁴ = 231545430403117 is a prime.

It is a super-2 number, since 2×231545430403133² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231545430403139) 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, 96658985 + ... + 99025502.

It is an arithmetic number, because the mean of its divisors is an integer number (9167426893824).

Almost surely, 2^{231545430403133} is an apocalyptic number.

It is an amenable number.

231545430403133 is a deficient number, since it is larger than the sum of its proper divisors (61812230199235).

231545430403133 is a wasteful number, since it uses less digits than its factorization.

231545430403133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195684654 (or 195684632 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 41.

Adding to 231545430403133 its reverse (331304034545132), we get a palindrome (562849464948265).

The spelling of 231545430403133 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred thirty million, four hundred three thousand, one hundred thirty-three".