311440042023400 has 96 divisors (see below), whose sum is σ = 737257486474080. Its totient is φ = 122319189216000.

The previous prime is 311440042023391. The next prime is 311440042023403. The reversal of 311440042023400 is 4320240044113.

It is a super-2 number, since 2×311440042023400² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (311440042023403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15387454 + ... + 29319853.

It is an arithmetic number, because the mean of its divisors is an integer number (7679765484105).

Almost surely, 2^{311440042023400} is an apocalyptic number.

It is an amenable number.

311440042023400 is an abundant number, since it is smaller than the sum of its proper divisors (425817444450680).

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

311440042023400 is a wasteful number, since it uses less digits than its factorization.

311440042023400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44707955 (or 44707946 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 311440042023400 its reverse (4320240044113), we get a palindrome (315760282067513).

The spelling of 311440042023400 in words is "three hundred eleven trillion, four hundred forty billion, forty-two million, twenty-three thousand, four hundred".