201320023969 has 3 divisors (see below), whose sum is σ = 201320472657. Its totient is φ = 201319575282.

The previous prime is 201320023943. The next prime is 201320023979. The reversal of 201320023969 is 969320023102.

The square root of 201320023969 is 448687.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 201320023969 - 2²⁹ = 200783153057 is a prime.

It is a super-2 number, since 2×201320023969² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201320023979) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 224344 + ... + 673030.

It is an arithmetic number, because the mean of its divisors is an integer number (67106824219).

Almost surely, 2^201320023969 is an apocalyptic number.

201320023969 is the 448687-th square number.

201320023969 is the 224344-th centered octagonal number.

It is an amenable number.

201320023969 is a deficient number, since it is larger than the sum of its proper divisors (448688).

201320023969 is an frugal number, since it uses more digits than its factorization.

201320023969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897374 (or 448687 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 201320023969 in words is "two hundred one billion, three hundred twenty million, twenty-three thousand, nine hundred sixty-nine".