3031142021 has 4 divisors (see below), whose sum is σ = 3047888844. Its totient is φ = 3014395200.

The previous prime is 3031141999. The next prime is 3031142053. The reversal of 3031142021 is 1202411303.

3031142021 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, and also an emirpimes, since its reverse is a distinct semiprime: 1202411303 = 11411 ⋅105373.

It can be written as a sum of positive squares in 2 ways, for example, as 140896900 + 2890245121 = 11870^2 + 53761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3031142021 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 (3031102021) 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, 8373140 + ... + 8373501.

It is an arithmetic number, because the mean of its divisors is an integer number (761972211).

Almost surely, 2^3031142021 is an apocalyptic number.

It is an amenable number.

3031142021 is a deficient number, since it is larger than the sum of its proper divisors (16746823).

3031142021 is a wasteful number, since it uses less digits than its factorization.

3031142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16746822.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3031142021 is about 55055.8082403664. The cubic root of 3031142021 is about 1447.2229083125. Note that the first 3 decimals are identical.

Adding to 3031142021 its reverse (1202411303), we get a palindrome (4233553324).

The spelling of 3031142021 in words is "three billion, thirty-one million, one hundred forty-two thousand, twenty-one".