311203140344 has 8 divisors (see below), whose sum is σ = 583505888160. Its totient is φ = 155601570168.

The previous prime is 311203140277. The next prime is 311203140371. The reversal of 311203140344 is 443041302113.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19450196264 + ... + 19450196279.

It is an arithmetic number, because the mean of its divisors is an integer number (72938236020).

Almost surely, 2^311203140344 is an apocalyptic number.

It is an amenable number.

311203140344 is a deficient number, since it is larger than the sum of its proper divisors (272302747816).

311203140344 is a wasteful number, since it uses less digits than its factorization.

311203140344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38900392549 (or 38900392545 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 311203140344 its reverse (443041302113), we get a palindrome (754244442457).

The spelling of 311203140344 in words is "three hundred eleven billion, two hundred three million, one hundred forty thousand, three hundred forty-four".