201013123 has 12 divisors (see below), whose sum is σ = 217395360. Its totient is φ = 185629136.

The previous prime is 201013097. The next prime is 201013139. The reversal of 201013123 is 321310102.

It is a de Polignac number, because none of the positive numbers 2^k-201013123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201013523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8790 + ... + 21892.

It is an arithmetic number, because the mean of its divisors is an integer number (18116280).

Almost surely, 2^201013123 is an apocalyptic number.

201013123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

201013123 is a deficient number, since it is larger than the sum of its proper divisors (16382237).

201013123 is a wasteful number, since it uses less digits than its factorization.

201013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13178 (or 13155 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 201013123 is about 14177.9096837298. The cubic root of 201013123 is about 585.7893481573.

Adding to 201013123 its reverse (321310102), we get a palindrome (522323225).

The spelling of 201013123 in words is "two hundred one million, thirteen thousand, one hundred twenty-three".