311440400130342 has 32 divisors (see below), whose sum is σ = 720440443683072. Its totient is φ = 87910887471264.

The previous prime is 311440400130263. The next prime is 311440400130401. The reversal of 311440400130342 is 243031004044113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44670162913 + ... + 44670169884.

It is an arithmetic number, because the mean of its divisors is an integer number (22513763865096).

Almost surely, 2^{311440400130342} is an apocalyptic number.

311440400130342 is an abundant number, since it is smaller than the sum of its proper divisors (409000043552730).

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

311440400130342 is a wasteful number, since it uses less digits than its factorization.

311440400130342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89340332892.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 311440400130342 its reverse (243031004044113), we get a palindrome (554471404174455).

The spelling of 311440400130342 in words is "three hundred eleven trillion, four hundred forty billion, four hundred million, one hundred thirty thousand, three hundred forty-two".