87433774231 has 2 divisors, whose sum is σ = 87433774232. Its totient is φ = 87433774230.

The previous prime is 87433774151. The next prime is 87433774271. The reversal of 87433774231 is 13247733478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87433774231 - 2⁹ = 87433773719 is a prime.

It is a super-2 number, since 2×87433774231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87433774271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43716887115 + 43716887116.

It is an arithmetic number, because the mean of its divisors is an integer number (43716887116).

Almost surely, 2^87433774231 is an apocalyptic number.

87433774231 is a deficient number, since it is larger than the sum of its proper divisors (1).

87433774231 is an equidigital number, since it uses as much as digits as its factorization.

87433774231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2370816, while the sum is 49.

The spelling of 87433774231 in words is "eighty-seven billion, four hundred thirty-three million, seven hundred seventy-four thousand, two hundred thirty-one".