1231023042049 has 2 divisors, whose sum is σ = 1231023042050. Its totient is φ = 1231023042048.

The previous prime is 1231023041993. The next prime is 1231023042071. The reversal of 1231023042049 is 9402403201321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 956546593024 + 274476449025 = 978032^2 + 523905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231023042049 - 2²¹ = 1231020944897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1231023042049.

It is not a weakly prime, because it can be changed into another prime (1231023042079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615511521024 + 615511521025.

It is an arithmetic number, because the mean of its divisors is an integer number (615511521025).

Almost surely, 2^{1231023042049} is an apocalyptic number.

It is an amenable number.

1231023042049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231023042049 is an equidigital number, since it uses as much as digits as its factorization.

1231023042049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 1231023042049 in words is "one trillion, two hundred thirty-one billion, twenty-three million, forty-two thousand, forty-nine".