231545354535213 has 8 divisors (see below), whose sum is σ = 308845470988800. Its totient is φ = 154304403885888.

The previous prime is 231545354535211. The next prime is 231545354535221. The reversal of 231545354535213 is 312535453545132.

It is a happy number.

231545354535213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231545354535213 - 2¹ = 231545354535211 is a prime.

It is a super-2 number, since 2×231545354535213² (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 (231545354535211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14791441933 + ... + 14791457586.

It is an arithmetic number, because the mean of its divisors is an integer number (38605683873600).

Almost surely, 2^{231545354535213} is an apocalyptic number.

It is an amenable number.

231545354535213 is a deficient number, since it is larger than the sum of its proper divisors (77300116453587).

231545354535213 is a wasteful number, since it uses less digits than its factorization.

231545354535213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29582902131.

The product of its digits is 16200000, while the sum is 51.

The spelling of 231545354535213 in words is "two hundred thirty-one trillion, five hundred forty-five billion, three hundred fifty-four million, five hundred thirty-five thousand, two hundred thirteen".