203401011 has 16 divisors (see below), whose sum is σ = 296340480. Its totient is φ = 123071520.

The previous prime is 203400997. The next prime is 203401021. The reversal of 203401011 is 110104302.

It is a happy number.

It is not a de Polignac number, because 203401011 - 2⁵ = 203400979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203401021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16830 + ... + 26268.

It is an arithmetic number, because the mean of its divisors is an integer number (18521280).

Almost surely, 2^203401011 is an apocalyptic number.

203401011 is a deficient number, since it is larger than the sum of its proper divisors (92939469).

203401011 is a wasteful number, since it uses less digits than its factorization.

203401011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 203401011 is about 14261.8726330030. The cubic root of 203401011 is about 588.0998054703.

Adding to 203401011 its reverse (110104302), we get a palindrome (313505313).

The spelling of 203401011 in words is "two hundred three million, four hundred one thousand, eleven".