231545401043013 has 24 divisors (see below), whose sum is σ = 346032393283200. Its totient is φ = 149021327949984.

The previous prime is 231545401043003. The next prime is 231545401043039. The reversal of 231545401043013 is 310340104545132.

231545401043013 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 4 + 540 + 104 + 3 + 0 + 1 + 3 = 666.

It is not a de Polignac number, because 231545401043013 - 2⁴ = 231545401042997 is a prime.

It is a super-2 number, since 2×231545401043013² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231545401043003) 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 23 ways as a sum of consecutive naturals, for example, 55698073 + ... + 59710686.

It is an arithmetic number, because the mean of its divisors is an integer number (14418016386800).

Almost surely, 2^{231545401043013} is an apocalyptic number.

It is an amenable number.

231545401043013 is a deficient number, since it is larger than the sum of its proper divisors (114486992240187).

231545401043013 is a wasteful number, since it uses less digits than its factorization.

231545401043013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115416481 (or 115416478 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 231545401043013 its reverse (310340104545132), we get a palindrome (541885505588145).

The spelling of 231545401043013 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred one million, forty-three thousand, thirteen".