4220131 has 4 divisors (see below), whose sum is σ = 4468392. Its totient is φ = 3971872.

The previous prime is 4220081. The next prime is 4220137. The reversal of 4220131 is 1310224.

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 4220131 - 2¹⁵ = 4187363 is a prime.

It is a super-2 number, since 2×4220131² = 35619011314322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4220137) 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, 124105 + ... + 124138.

It is an arithmetic number, because the mean of its divisors is an integer number (1117098).

Almost surely, 2^4220131 is an apocalyptic number.

4220131 is a deficient number, since it is larger than the sum of its proper divisors (248261).

4220131 is a wasteful number, since it uses less digits than its factorization.

4220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248260.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 4220131 is about 2054.2957430711. The cubic root of 4220131 is about 161.6002310840.

Adding to 4220131 its reverse (1310224), we get a palindrome (5530355).

The spelling of 4220131 in words is "four million, two hundred twenty thousand, one hundred thirty-one".