3243232131991 has 2 divisors, whose sum is σ = 3243232131992. Its totient is φ = 3243232131990.

The previous prime is 3243232131983. The next prime is 3243232132033. The reversal of 3243232131991 is 1991312323423.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3243232131991 - 2³ = 3243232131983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3243232131901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1621616065995 + 1621616065996.

It is an arithmetic number, because the mean of its divisors is an integer number (1621616065996).

Almost surely, 2^{3243232131991} is an apocalyptic number.

3243232131991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3243232131991 is an equidigital number, since it uses as much as digits as its factorization.

3243232131991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 43.

The spelling of 3243232131991 in words is "three trillion, two hundred forty-three billion, two hundred thirty-two million, one hundred thirty-one thousand, nine hundred ninety-one".