311140300421 has 16 divisors (see below), whose sum is σ = 334583005680. Its totient is φ = 288302976000.

The previous prime is 311140300397. The next prime is 311140300423. The reversal of 311140300421 is 124003041113.

It can be written as a sum of positive squares in 8 ways, for example, as 17825988196 + 293314312225 = 133514^2 + 541585^2 .

It is a cyclic number.

It is not a de Polignac number, because 311140300421 - 2²⁶ = 311073191557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311140300393 and 311140300402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311140300423) 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, 243830 + ... + 825671.

It is an arithmetic number, because the mean of its divisors is an integer number (20911437855).

Almost surely, 2^311140300421 is an apocalyptic number.

It is an amenable number.

311140300421 is a deficient number, since it is larger than the sum of its proper divisors (23442705259).

311140300421 is a wasteful number, since it uses less digits than its factorization.

311140300421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069784.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 311140300421 its reverse (124003041113), we get a palindrome (435143341534).

The spelling of 311140300421 in words is "three hundred eleven billion, one hundred forty million, three hundred thousand, four hundred twenty-one".