231545430415545 has 16 divisors (see below), whose sum is σ = 370480194917952. Its totient is φ = 123488394137280.

The previous prime is 231545430415543. The next prime is 231545430415583. The reversal of 231545430415545 is 545514034545132.

231545430415545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231545430415545 - 2¹ = 231545430415543 is a prime.

It is a super-3 number, since 3×231545430415545³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231545430415543) 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, 155615146 + ... + 157096035.

It is an arithmetic number, because the mean of its divisors is an integer number (23155012182372).

Almost surely, 2^{231545430415545} is an apocalyptic number.

It is an amenable number.

231545430415545 is a deficient number, since it is larger than the sum of its proper divisors (138934764502407).

231545430415545 is a wasteful number, since it uses less digits than its factorization.

231545430415545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312760552.

The product of its (nonzero) digits is 14400000, while the sum is 51.

The spelling of 231545430415545 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred thirty million, four hundred fifteen thousand, five hundred forty-five".