231303111221141 has 4 divisors (see below), whose sum is σ = 231490098377772. Its totient is φ = 231116124064512.

The previous prime is 231303111221113. The next prime is 231303111221177. The reversal of 231303111221141 is 141122111303132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87421191004900 + 143881920216241 = 9349930^2 + 11995079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231303111221141 is a prime.

It is a super-2 number, since 2×231303111221141² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231303111221141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231303111221101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93493576460 + ... + 93493578933.

It is an arithmetic number, because the mean of its divisors is an integer number (57872524594443).

Almost surely, 2^{231303111221141} is an apocalyptic number.

It is an amenable number.

231303111221141 is a deficient number, since it is larger than the sum of its proper divisors (186987156631).

231303111221141 is a wasteful number, since it uses less digits than its factorization.

231303111221141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186987156630.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 231303111221141 its reverse (141122111303132), we get a palindrome (372425222524273).

The spelling of 231303111221141 in words is "two hundred thirty-one trillion, three hundred three billion, one hundred eleven million, two hundred twenty-one thousand, one hundred forty-one".