201118623 has 8 divisors (see below), whose sum is σ = 273217968. Its totient is φ = 131549184.

The previous prime is 201118613. The next prime is 201118627. The reversal of 201118623 is 326811102.

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

It is not a de Polignac number, because 201118623 - 2¹² = 201114527 is a prime.

It is a super-2 number, since 2×201118623² = 80897401034832258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201118593 and 201118602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201118627) 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, 632290 + ... + 632607.

It is an arithmetic number, because the mean of its divisors is an integer number (34152246).

Almost surely, 2^201118623 is an apocalyptic number.

201118623 is a deficient number, since it is larger than the sum of its proper divisors (72099345).

201118623 is a wasteful number, since it uses less digits than its factorization.

201118623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264953.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 201118623 is about 14181.6297723499. The cubic root of 201118623 is about 585.8918123922.

Adding to 201118623 its reverse (326811102), we get a palindrome (527929725).

The spelling of 201118623 in words is "two hundred one million, one hundred eighteen thousand, six hundred twenty-three".