201413131021 has 4 divisors (see below), whose sum is σ = 201469727200. Its totient is φ = 201356534844.

The previous prime is 201413130983. The next prime is 201413131037. The reversal of 201413131021 is 120131314102.

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 201413131021 - 2²⁷ = 201278913293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201413131021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201413131721) 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, 28292751 + ... + 28299868.

It is an arithmetic number, because the mean of its divisors is an integer number (50367431800).

Almost surely, 2^201413131021 is an apocalyptic number.

It is an amenable number.

201413131021 is a deficient number, since it is larger than the sum of its proper divisors (56596179).

201413131021 is an equidigital number, since it uses as much as digits as its factorization.

201413131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56596178.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 201413131021 its reverse (120131314102), we get a palindrome (321544445123).

The spelling of 201413131021 in words is "two hundred one billion, four hundred thirteen million, one hundred thirty-one thousand, twenty-one".