4220254631 has 4 divisors (see below), whose sum is σ = 4223329752. Its totient is φ = 4217179512.

The previous prime is 4220254627. The next prime is 4220254637. The reversal of 4220254631 is 1364520224.

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

It is a cyclic number.

It is not a de Polignac number, because 4220254631 - 2² = 4220254627 is a prime.

It is a super-2 number, since 2×4220254631² = 35621098300953892322, 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 = 4220254594 and 4220254603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220254637) 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, 1535501 + ... + 1538246.

It is an arithmetic number, because the mean of its divisors is an integer number (1055832438).

Almost surely, 2^4220254631 is an apocalyptic number.

4220254631 is a deficient number, since it is larger than the sum of its proper divisors (3075121).

4220254631 is a wasteful number, since it uses less digits than its factorization.

4220254631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075120.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 4220254631 is about 64963.4869061075. The cubic root of 4220254631 is about 1616.0180912376.

Adding to 4220254631 its reverse (1364520224), we get a palindrome (5584774855).

The spelling of 4220254631 in words is "four billion, two hundred twenty million, two hundred fifty-four thousand, six hundred thirty-one".