2311453386438 has 64 divisors (see below), whose sum is σ = 5384669985792. Its totient is φ = 647754456960.

The previous prime is 2311453386433. The next prime is 2311453386443. The reversal of 2311453386438 is 8346833541132.

It is a happy number.

2311453386438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2311453386433) and next prime (2311453386443).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311453386433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7122520 + ... + 7439972.

It is an arithmetic number, because the mean of its divisors is an integer number (84135468528).

Almost surely, 2^{2311453386438} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311453386438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2692334992896).

2311453386438 is an abundant number, since it is smaller than the sum of its proper divisors (3073216599354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2311453386438 is a wasteful number, since it uses less digits than its factorization.

2311453386438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320789.

The product of its digits is 4976640, while the sum is 51.

The spelling of 2311453386438 in words is "two trillion, three hundred eleven billion, four hundred fifty-three million, three hundred eighty-six thousand, four hundred thirty-eight".