231286536829 has 2 divisors, whose sum is σ = 231286536830. Its totient is φ = 231286536828.

The previous prime is 231286536727. The next prime is 231286536857. The reversal of 231286536829 is 928635682132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227912669604 + 3373867225 = 477402^2 + 58085^2 .

It is a cyclic number.

It is not a de Polignac number, because 231286536829 - 2¹⁹ = 231286012541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231286536829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231286536869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115643268414 + 115643268415.

It is an arithmetic number, because the mean of its divisors is an integer number (115643268415).

Almost surely, 2^231286536829 is an apocalyptic number.

It is an amenable number.

231286536829 is a deficient number, since it is larger than the sum of its proper divisors (1).

231286536829 is an equidigital number, since it uses as much as digits as its factorization.

231286536829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 55.

The spelling of 231286536829 in words is "two hundred thirty-one billion, two hundred eighty-six million, five hundred thirty-six thousand, eight hundred twenty-nine".