20130201 has 40 divisors (see below), whose sum is σ = 37024064. Its totient is φ = 10614240.

The previous prime is 20130197. The next prime is 20130203. The reversal of 20130201 is 10203102.

It is a happy number.

20130201 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 20130201 - 2² = 20130197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20130203) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6006 + ... + 8736.

Almost surely, 2^20130201 is an apocalyptic number.

20130201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20130201 is a deficient number, since it is larger than the sum of its proper divisors (16893863).

20130201 is a wasteful number, since it uses less digits than its factorization.

20130201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763 (or 2754 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 20130201 is about 4486.6692545807. The cubic root of 20130201 is about 272.0295211975.

Adding to 20130201 its reverse (10203102), we get a palindrome (30333303).

It can be divided in two parts, 2013020 and 1, that added together give a triangular number (2013021 = T₂₀₀₆).

The spelling of 20130201 in words is "twenty million, one hundred thirty thousand, two hundred one".