283109075023721 has 2 divisors, whose sum is σ = 283109075023722. Its totient is φ = 283109075023720.

The previous prime is 283109075023673. The next prime is 283109075023787. The reversal of 283109075023721 is 127320570901382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242499299167321 + 40609775856400 = 15572389^2 + 6372580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-283109075023721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 283109075023721.

It is not a weakly prime, because it can be changed into another prime (283109075023321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141554537511860 + 141554537511861.

It is an arithmetic number, because the mean of its divisors is an integer number (141554537511861).

Almost surely, 2^{283109075023721} is an apocalyptic number.

It is an amenable number.

283109075023721 is a deficient number, since it is larger than the sum of its proper divisors (1).

283109075023721 is an equidigital number, since it uses as much as digits as its factorization.

283109075023721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 283109075023721 in words is "two hundred eighty-three trillion, one hundred nine billion, seventy-five million, twenty-three thousand, seven hundred twenty-one".