1021213983 has 8 divisors (see below), whose sum is σ = 1369489968. Its totient is φ = 676873664.

The previous prime is 1021213981. The next prime is 1021214003. The reversal of 1021213983 is 3893121201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021213983 - 2¹ = 1021213981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021213983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021213981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983310 + ... + 984347.

It is an arithmetic number, because the mean of its divisors is an integer number (171186246).

Almost surely, 2^1021213983 is an apocalyptic number.

1021213983 is a deficient number, since it is larger than the sum of its proper divisors (348275985).

1021213983 is a wasteful number, since it uses less digits than its factorization.

1021213983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967833.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1021213983 is about 31956.4388347638. The cubic root of 1021213983 is about 1007.0219051053.

The spelling of 1021213983 in words is "one billion, twenty-one million, two hundred thirteen thousand, nine hundred eighty-three".