201034340023 has 4 divisors (see below), whose sum is σ = 219310189128. Its totient is φ = 182758490920.

The previous prime is 201034339991. The next prime is 201034340051. The reversal of 201034340023 is 320043430102.

It is a happy number.

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 201034340023 - 2⁵ = 201034339991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201034339976 and 201034340003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201034340623) 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, 9137924536 + ... + 9137924557.

It is an arithmetic number, because the mean of its divisors is an integer number (54827547282).

Almost surely, 2^201034340023 is an apocalyptic number.

201034340023 is a deficient number, since it is larger than the sum of its proper divisors (18275849105).

201034340023 is a wasteful number, since it uses less digits than its factorization.

201034340023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18275849104.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 201034340023 its reverse (320043430102), we get a palindrome (521077770125).

The spelling of 201034340023 in words is "two hundred one billion, thirty-four million, three hundred forty thousand, twenty-three".