311430240231040 has 128 divisors (see below), whose sum is σ = 850880486891520. Its totient is φ = 106775005593600.

The previous prime is 311430240230999. The next prime is 311430240231041. The reversal of 311430240231040 is 40132042034113.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (311430240231041) 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 in 15 ways as a sum of consecutive naturals, for example, 535297744 + ... + 535879216.

It is an arithmetic number, because the mean of its divisors is an integer number (6647503803840).

Almost surely, 2^{311430240231040} is an apocalyptic number.

It is an amenable number.

311430240231040 is an abundant number, since it is smaller than the sum of its proper divisors (539450246660480).

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

311430240231040 is a wasteful number, since it uses less digits than its factorization.

311430240231040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701050 (or 701038 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 311430240231040 its reverse (40132042034113), we get a palindrome (351562282265153).

The spelling of 311430240231040 in words is "three hundred eleven trillion, four hundred thirty billion, two hundred forty million, two hundred thirty-one thousand, forty".