4040301431021 has 2 divisors, whose sum is σ = 4040301431022. Its totient is φ = 4040301431020.

The previous prime is 4040301431017. The next prime is 4040301431039. The reversal of 4040301431021 is 1201341030404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2748019021225 + 1292282409796 = 1657715^2 + 1136786^2 .

It is a cyclic number.

It is not a de Polignac number, because 4040301431021 - 2² = 4040301431017 is a prime.

It is a super-2 number, since 2×4040301431021² (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 (4040301431321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020150715510 + 2020150715511.

It is an arithmetic number, because the mean of its divisors is an integer number (2020150715511).

Almost surely, 2^{4040301431021} is an apocalyptic number.

It is an amenable number.

4040301431021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040301431021 is an equidigital number, since it uses as much as digits as its factorization.

4040301431021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 4040301431021 its reverse (1201341030404), we get a palindrome (5241642461425).

The spelling of 4040301431021 in words is "four trillion, forty billion, three hundred one million, four hundred thirty-one thousand, twenty-one".