1021143344 has 20 divisors (see below), whose sum is σ = 2130655296. Its totient is φ = 471296832.

The previous prime is 1021143341. The next prime is 1021143359. The reversal of 1021143344 is 4433411201.

It is not an unprimeable number, because it can be changed into a prime (1021143341) 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, 2454464 + ... + 2454879.

Almost surely, 2^1021143344 is an apocalyptic number.

It is an amenable number.

1021143344 is an abundant number, since it is smaller than the sum of its proper divisors (1109511952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021143344 is a wasteful number, since it uses less digits than its factorization.

1021143344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4909364 (or 4909358 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1021143344 is about 31955.3335767286. Note that the first 3 decimals coincide. The cubic root of 1021143344 is about 1006.9986854661.

Adding to 1021143344 its reverse (4433411201), we get a palindrome (5454554545).

The spelling of 1021143344 in words is "one billion, twenty-one million, one hundred forty-three thousand, three hundred forty-four".