1231040113444 has 6 divisors (see below), whose sum is σ = 2154320198534. Its totient is φ = 615520056720.

The previous prime is 1231040113441. The next prime is 1231040113447. The reversal of 1231040113444 is 4443110401321.

It is an interprime number because it is at equal distance from previous prime (1231040113441) and next prime (1231040113447).

It can be written as a sum of positive squares in only one way, i.e., 1184766940900 + 46273172544 = 1088470^2 + 215112^2 .

It is a super-2 number, since 2×1231040113444² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231040113441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153880014177 + ... + 153880014184.

Almost surely, 2^{1231040113444} is an apocalyptic number.

It is an amenable number.

1231040113444 is a deficient number, since it is larger than the sum of its proper divisors (923280085090).

1231040113444 is a wasteful number, since it uses less digits than its factorization.

1231040113444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307760028365 (or 307760028363 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1231040113444 its reverse (4443110401321), we get a palindrome (5674150514765).

The spelling of 1231040113444 in words is "one trillion, two hundred thirty-one billion, forty million, one hundred thirteen thousand, four hundred forty-four".