131011220311444 has 48 divisors (see below), whose sum is σ = 253851845829120. Its totient is φ = 58660239195360.

The previous prime is 131011220311331. The next prime is 131011220311459. The reversal of 131011220311444 is 444113022110131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118901619 + ... + 119998405.

It is an arithmetic number, because the mean of its divisors is an integer number (5288580121440).

Almost surely, 2^{131011220311444} is an apocalyptic number.

It is an amenable number.

131011220311444 is a deficient number, since it is larger than the sum of its proper divisors (122840625517676).

131011220311444 is a wasteful number, since it uses less digits than its factorization.

131011220311444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137388 (or 1137386 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 131011220311444 its reverse (444113022110131), we get a palindrome (575124242421575).

The spelling of 131011220311444 in words is "one hundred thirty-one trillion, eleven billion, two hundred twenty million, three hundred eleven thousand, four hundred forty-four".