4020321311043 has 16 divisors (see below), whose sum is σ = 5593537990656. Its totient is φ = 2563661397440.

The previous prime is 4020321311033. The next prime is 4020321311087. The reversal of 4020321311043 is 3401131230204.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4020321311043 - 2⁸ = 4020321310787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4020321311033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13216783 + ... + 13517543.

It is an arithmetic number, because the mean of its divisors is an integer number (349596124416).

Almost surely, 2^{4020321311043} is an apocalyptic number.

4020321311043 is a deficient number, since it is larger than the sum of its proper divisors (1573216679613).

4020321311043 is a wasteful number, since it uses less digits than its factorization.

4020321311043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494514.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 4020321311043 its reverse (3401131230204), we get a palindrome (7421452541247).

The spelling of 4020321311043 in words is "four trillion, twenty billion, three hundred twenty-one million, three hundred eleven thousand, forty-three".