1011144312423 has 64 divisors (see below), whose sum is σ = 1739574476800. Its totient is φ = 568524821760.

The previous prime is 1011144312421. The next prime is 1011144312427. The reversal of 1011144312423 is 3242134411101.

It is a happy number.

It is not a de Polignac number, because 1011144312423 - 2¹ = 1011144312421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011144312421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5721498 + ... + 5895576.

It is an arithmetic number, because the mean of its divisors is an integer number (27180851200).

Almost surely, 2^{1011144312423} is an apocalyptic number.

1011144312423 is a deficient number, since it is larger than the sum of its proper divisors (728430164377).

1011144312423 is a wasteful number, since it uses less digits than its factorization.

1011144312423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174589 (or 174583 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1011144312423 its reverse (3242134411101), we get a palindrome (4253278723524).

The spelling of 1011144312423 in words is "one trillion, eleven billion, one hundred forty-four million, three hundred twelve thousand, four hundred twenty-three".