201043403013 has 4 divisors (see below), whose sum is σ = 268057870688. Its totient is φ = 134028935340.

The previous prime is 201043402999. The next prime is 201043403017. The reversal of 201043403013 is 310304340102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 201043403013 - 2⁶ = 201043402949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201043403017) 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, 33507233833 + ... + 33507233838.

It is an arithmetic number, because the mean of its divisors is an integer number (67014467672).

Almost surely, 2^201043403013 is an apocalyptic number.

It is an amenable number.

201043403013 is a deficient number, since it is larger than the sum of its proper divisors (67014467675).

201043403013 is an equidigital number, since it uses as much as digits as its factorization.

201043403013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67014467674.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 201043403013 its reverse (310304340102), we get a palindrome (511347743115).

The spelling of 201043403013 in words is "two hundred one billion, forty-three million, four hundred three thousand, thirteen".