3031142221 has 4 divisors (see below), whose sum is σ = 3032867200. Its totient is φ = 3029417244.

The previous prime is 3031142183. The next prime is 3031142227. The reversal of 3031142221 is 1222411303.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3031142221 - 2²¹ = 3029045069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031142227) 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, 859851 + ... + 863368.

It is an arithmetic number, because the mean of its divisors is an integer number (758216800).

Almost surely, 2^3031142221 is an apocalyptic number.

It is an amenable number.

3031142221 is a deficient number, since it is larger than the sum of its proper divisors (1724979).

3031142221 is a wasteful number, since it uses less digits than its factorization.

3031142221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724978.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3031142221 is about 55055.8100567052. The cubic root of 3031142221 is about 1447.2229401426. Note that the first 3 decimals are identical.

Adding to 3031142221 its reverse (1222411303), we get a palindrome (4253553524).

The spelling of 3031142221 in words is "three billion, thirty-one million, one hundred forty-two thousand, two hundred twenty-one".