231484189777 has 2 divisors, whose sum is σ = 231484189778. Its totient is φ = 231484189776.

The previous prime is 231484189751. The next prime is 231484189823. The reversal of 231484189777 is 777981484132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213495747136 + 17988442641 = 462056^2 + 134121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231484189777 is a prime.

It is not a weakly prime, because it can be changed into another prime (231484187777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115742094888 + 115742094889.

It is an arithmetic number, because the mean of its divisors is an integer number (115742094889).

Almost surely, 2^231484189777 is an apocalyptic number.

It is an amenable number.

231484189777 is a deficient number, since it is larger than the sum of its proper divisors (1).

231484189777 is an equidigital number, since it uses as much as digits as its factorization.

231484189777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18966528, while the sum is 61.

The spelling of 231484189777 in words is "two hundred thirty-one billion, four hundred eighty-four million, one hundred eighty-nine thousand, seven hundred seventy-seven".