2731731222001 has 4 divisors (see below), whose sum is σ = 2731817160000. Its totient is φ = 2731645284004.

The previous prime is 2731731221927. The next prime is 2731731222019. The reversal of 2731731222001 is 1002221371372.

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 2731731222001 - 2²³ = 2731722833393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2731731222401) 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, 42921301 + ... + 42984898.

It is an arithmetic number, because the mean of its divisors is an integer number (682954290000).

Almost surely, 2^{2731731222001} is an apocalyptic number.

It is an amenable number.

2731731222001 is a deficient number, since it is larger than the sum of its proper divisors (85937999).

2731731222001 is an equidigital number, since it uses as much as digits as its factorization.

2731731222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85937998.

The product of its (nonzero) digits is 7056, while the sum is 31.

Adding to 2731731222001 its reverse (1002221371372), we get a palindrome (3733952593373).

The spelling of 2731731222001 in words is "two trillion, seven hundred thirty-one billion, seven hundred thirty-one million, two hundred twenty-two thousand, one".