311232240045543 has 16 divisors (see below), whose sum is σ = 432374235753600. Its totient is φ = 198892148431200.

The previous prime is 311232240045469. The next prime is 311232240045547. The reversal of 311232240045543 is 345540042232113.

It is a happy number.

It is not a de Polignac number, because 311232240045543 - 2¹³ = 311232240037351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311232240045547) 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, 12868268733 + ... + 12868292918.

It is an arithmetic number, because the mean of its divisors is an integer number (27023389734600).

Almost surely, 2^{311232240045543} is an apocalyptic number.

311232240045543 is a deficient number, since it is larger than the sum of its proper divisors (121141995708057).

311232240045543 is a wasteful number, since it uses less digits than its factorization.

311232240045543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25736561822.

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 311232240045543 its reverse (345540042232113), we get a palindrome (656772282277656).

The spelling of 311232240045543 in words is "three hundred eleven trillion, two hundred thirty-two billion, two hundred forty million, forty-five thousand, five hundred forty-three".