2021631452 has 12 divisors (see below), whose sum is σ = 3539030040. Its totient is φ = 1010480016.

The previous prime is 2021631433. The next prime is 2021631457. The reversal of 2021631452 is 2541361202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021631457) 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, 70127 + ... + 94662.

It is an arithmetic number, because the mean of its divisors is an integer number (294919170).

Almost surely, 2^2021631452 is an apocalyptic number.

It is an amenable number.

2021631452 is a deficient number, since it is larger than the sum of its proper divisors (1517398588).

2021631452 is a wasteful number, since it uses less digits than its factorization.

2021631452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167860 (or 167858 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2021631452 is about 44962.5561106128. The cubic root of 2021631452 is about 1264.4470917129.

Adding to 2021631452 its reverse (2541361202), we get a palindrome (4562992654).

The spelling of 2021631452 in words is "two billion, twenty-one million, six hundred thirty-one thousand, four hundred fifty-two".