231545430135144 has 96 divisors (see below), whose sum is σ = 650350294251840. Its totient is φ = 77179189564800.

The previous prime is 231545430135137. The next prime is 231545430135161. The reversal of 231545430135144 is 441531034545132.

231545430135144 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 4 + 543 + 0 + 13 + 51 + 44 = 666.

It is a super-2 number, since 2×231545430135144² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231545430135144.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55673284 + ... + 59687564.

It is an arithmetic number, because the mean of its divisors is an integer number (6774482231790).

Almost surely, 2^{231545430135144} is an apocalyptic number.

231545430135144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231545430135144 is an abundant number, since it is smaller than the sum of its proper divisors (418804864116696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231545430135144 is a wasteful number, since it uses less digits than its factorization.

231545430135144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043973 (or 4043957 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 231545430135144 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred thirty million, one hundred thirty-five thousand, one hundred forty-four".