3243631602391 has 2 divisors, whose sum is σ = 3243631602392. Its totient is φ = 3243631602390.

The previous prime is 3243631602359. The next prime is 3243631602451. The reversal of 3243631602391 is 1932061363423.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3243631602391 - 2⁵ = 3243631602359 is a prime.

It is a super-2 number, since 2×3243631602391² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3243631602091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1621815801195 + 1621815801196.

It is an arithmetic number, because the mean of its divisors is an integer number (1621815801196).

Almost surely, 2^{3243631602391} is an apocalyptic number.

3243631602391 is a deficient number, since it is larger than the sum of its proper divisors (1).

3243631602391 is an equidigital number, since it uses as much as digits as its factorization.

3243631602391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 43.

The spelling of 3243631602391 in words is "three trillion, two hundred forty-three billion, six hundred thirty-one million, six hundred two thousand, three hundred ninety-one".