203040040101 has 4 divisors (see below), whose sum is σ = 270720053472. Its totient is φ = 135360026732.

The previous prime is 203040040051. The next prime is 203040040111. The reversal of 203040040101 is 101040040302.

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 a cyclic number.

It is not a de Polignac number, because 203040040101 - 2¹⁴ = 203040023717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203040040111) 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, 33840006681 + ... + 33840006686.

It is an arithmetic number, because the mean of its divisors is an integer number (67680013368).

Almost surely, 2^203040040101 is an apocalyptic number.

It is an amenable number.

203040040101 is a deficient number, since it is larger than the sum of its proper divisors (67680013371).

203040040101 is an equidigital number, since it uses as much as digits as its factorization.

203040040101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67680013370.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 203040040101 its reverse (101040040302), we get a palindrome (304080080403).

The spelling of 203040040101 in words is "two hundred three billion, forty million, forty thousand, one hundred one".