231444161543273 has 6 divisors (see below), whose sum is σ = 269230963427946. Its totient is φ = 198380709894192.

The previous prime is 231444161543239. The next prime is 231444161543279. The reversal of 231444161543273 is 372345161444132.

It can be written as a sum of positive squares in only one way, i.e., 176595740278489 + 54848421264784 = 13288933^2 + 7405972^2 .

It is not a de Polignac number, because 231444161543273 - 2²² = 231444157348969 is a prime.

It is a super-3 number, since 3×231444161543273³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231444161543279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2361675117740 + ... + 2361675117837.

It is an arithmetic number, because the mean of its divisors is an integer number (44871827237991).

Almost surely, 2^{231444161543273} is an apocalyptic number.

It is an amenable number.

231444161543273 is a deficient number, since it is larger than the sum of its proper divisors (37786801884673).

231444161543273 is an equidigital number, since it uses as much as digits as its factorization.

231444161543273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723350235591 (or 4723350235584 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 50.

The spelling of 231444161543273 in words is "two hundred thirty-one trillion, four hundred forty-four billion, one hundred sixty-one million, five hundred forty-three thousand, two hundred seventy-three".