4021450331 has 4 divisors (see below), whose sum is σ = 4107013152. Its totient is φ = 3935887512.

The previous prime is 4021450289. The next prime is 4021450361. The reversal of 4021450331 is 1330541204.

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-4021450331 is a prime.

It is a super-2 number, since 2×4021450331² = 32344125529400019122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4021450297 and 4021450306.

It is not an unprimeable number, because it can be changed into a prime (4021450361) 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, 42781340 + ... + 42781433.

It is an arithmetic number, because the mean of its divisors is an integer number (1026753288).

Almost surely, 2^4021450331 is an apocalyptic number.

4021450331 is a deficient number, since it is larger than the sum of its proper divisors (85562821).

4021450331 is an equidigital number, since it uses as much as digits as its factorization.

4021450331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85562820.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 4021450331 is about 63414.9062208563. The cubic root of 4021450331 is about 1590.2335180407.

Adding to 4021450331 its reverse (1330541204), we get a palindrome (5351991535).

The spelling of 4021450331 in words is "four billion, twenty-one million, four hundred fifty thousand, three hundred thirty-one".