3243021123431 has 4 divisors (see below), whose sum is σ = 3243026904192. Its totient is φ = 3243015342672.

The previous prime is 3243021123379. The next prime is 3243021123443. The reversal of 3243021123431 is 1343211203423.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3243021123431 is a prime.

It is a super-2 number, since 2×3243021123431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3243021123394 and 3243021123403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243021123931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1946030 + ... + 3205163.

It is an arithmetic number, because the mean of its divisors is an integer number (810756726048).

Almost surely, 2^{3243021123431} is an apocalyptic number.

3243021123431 is a deficient number, since it is larger than the sum of its proper divisors (5780761).

3243021123431 is an equidigital number, since it uses as much as digits as its factorization.

3243021123431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5780760.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 3243021123431 its reverse (1343211203423), we get a palindrome (4586232326854).

The spelling of 3243021123431 in words is "three trillion, two hundred forty-three billion, twenty-one million, one hundred twenty-three thousand, four hundred thirty-one".