2220151231 has 4 divisors (see below), whose sum is σ = 2296708200. Its totient is φ = 2143594264.

The previous prime is 2220151223. The next prime is 2220151237. The reversal of 2220151231 is 1321510222.

2220151231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2220151231 - 2³ = 2220151223 is a prime.

It is a super-2 number, since 2×2220151231² = 9858142977021630722, 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 = 2220151199 and 2220151208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220151237) 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, 38278441 + ... + 38278498.

It is an arithmetic number, because the mean of its divisors is an integer number (574177050).

Almost surely, 2^2220151231 is an apocalyptic number.

2220151231 is a deficient number, since it is larger than the sum of its proper divisors (76556969).

2220151231 is an equidigital number, since it uses as much as digits as its factorization.

2220151231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76556968.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2220151231 is about 47118.4807798384. The cubic root of 2220151231 is about 1304.5503715667.

Adding to 2220151231 its reverse (1321510222), we get a palindrome (3541661453).

The spelling of 2220151231 in words is "two billion, two hundred twenty million, one hundred fifty-one thousand, two hundred thirty-one".