201023199983 has 4 divisors (see below), whose sum is σ = 206456259480. Its totient is φ = 195590140488.

The previous prime is 201023199973. The next prime is 201023199991. The reversal of 201023199983 is 389991320102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201023199983 - 2⁶ = 201023199919 is a prime.

It is a super-2 number, since 2×201023199983² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201023199953) 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, 2716529693 + ... + 2716529766.

It is an arithmetic number, because the mean of its divisors is an integer number (51614064870).

Almost surely, 2^201023199983 is an apocalyptic number.

201023199983 is a deficient number, since it is larger than the sum of its proper divisors (5433059497).

201023199983 is an equidigital number, since it uses as much as digits as its factorization.

201023199983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5433059496.

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 201023199983 in words is "two hundred one billion, twenty-three million, one hundred ninety-nine thousand, nine hundred eighty-three".