311123050421 has 16 divisors (see below), whose sum is σ = 325907789760. Its totient is φ = 296612709120.

The previous prime is 311123050417. The next prime is 311123050463. The reversal of 311123050421 is 124050321113.

It is a cyclic number.

It is not a de Polignac number, because 311123050421 - 2² = 311123050417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311123050481) 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, 4473806 + ... + 4542816.

It is an arithmetic number, because the mean of its divisors is an integer number (20369236860).

Almost surely, 2^311123050421 is an apocalyptic number.

It is an amenable number.

311123050421 is a deficient number, since it is larger than the sum of its proper divisors (14784739339).

311123050421 is a wasteful number, since it uses less digits than its factorization.

311123050421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70996.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 311123050421 its reverse (124050321113), we get a palindrome (435173371534).

The spelling of 311123050421 in words is "three hundred eleven billion, one hundred twenty-three million, fifty thousand, four hundred twenty-one".