2231434121491 has 2 divisors, whose sum is σ = 2231434121492. Its totient is φ = 2231434121490.

The previous prime is 2231434121473. The next prime is 2231434121503. The reversal of 2231434121491 is 1941214341322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2231434121491 - 2²⁵ = 2231400567059 is a prime.

It is a super-3 number, since 3×2231434121491³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231434121491.

It is not a weakly prime, because it can be changed into another prime (2231434121591) 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, 1115717060745 + 1115717060746.

It is an arithmetic number, because the mean of its divisors is an integer number (1115717060746).

Almost surely, 2^{2231434121491} is an apocalyptic number.

2231434121491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231434121491 is an equidigital number, since it uses as much as digits as its factorization.

2231434121491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The spelling of 2231434121491 in words is "two trillion, two hundred thirty-one billion, four hundred thirty-four million, one hundred twenty-one thousand, four hundred ninety-one".