231444302011 has 16 divisors (see below), whose sum is σ = 252905103360. Its totient is φ = 210516752160.

The previous prime is 231444302009. The next prime is 231444302017. The reversal of 231444302011 is 110203444132.

It is not a de Polignac number, because 231444302011 - 2¹ = 231444302009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231444302017) 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, 292566 + ... + 740596.

It is an arithmetic number, because the mean of its divisors is an integer number (15806568960).

Almost surely, 2^231444302011 is an apocalyptic number.

231444302011 is a deficient number, since it is larger than the sum of its proper divisors (21460801349).

231444302011 is a wasteful number, since it uses less digits than its factorization.

231444302011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448626.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 231444302011 its reverse (110203444132), we get a palindrome (341647746143).

The spelling of 231444302011 in words is "two hundred thirty-one billion, four hundred forty-four million, three hundred two thousand, eleven".