2231144025165 has 48 divisors (see below), whose sum is σ = 4375145750976. Its totient is φ = 1081766793600.

The previous prime is 2231144025163. The next prime is 2231144025197. The reversal of 2231144025165 is 5615204411322.

2231144025165 is a `hidden beast` number, since 2 + 2 + 31 + 1 + 440 + 25 + 165 = 666.

It is not a de Polignac number, because 2231144025165 - 2¹ = 2231144025163 is a prime.

It is a super-3 number, since 3×2231144025165³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231144025161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83456296 + ... + 83483025.

It is an arithmetic number, because the mean of its divisors is an integer number (91148869812).

Almost surely, 2^{2231144025165} is an apocalyptic number.

It is an amenable number.

2231144025165 is a deficient number, since it is larger than the sum of its proper divisors (2144001725811).

2231144025165 is a wasteful number, since it uses less digits than its factorization.

2231144025165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166939352 (or 166939340 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 2231144025165 its reverse (5615204411322), we get a palindrome (7846348436487).

The spelling of 2231144025165 in words is "two trillion, two hundred thirty-one billion, one hundred forty-four million, twenty-five thousand, one hundred sixty-five".