311112421 has 16 divisors (see below), whose sum is σ = 329990400. Its totient is φ = 292723200.

The previous prime is 311112419. The next prime is 311112437. The reversal of 311112421 is 124211113.

It is a cyclic number.

It is not a de Polignac number, because 311112421 - 2¹ = 311112419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311112395 and 311112404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311112521) 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, 461941 + ... + 462613.

It is an arithmetic number, because the mean of its divisors is an integer number (20624400).

Almost surely, 2^311112421 is an apocalyptic number.

It is an amenable number.

311112421 is a deficient number, since it is larger than the sum of its proper divisors (18877979).

311112421 is a wasteful number, since it uses less digits than its factorization.

311112421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996.

The product of its digits is 48, while the sum is 16.

The square root of 311112421 is about 17638.3792055846. The cubic root of 311112421 is about 677.5985221845.

Adding to 311112421 its reverse (124211113), we get a palindrome (435323534).

The spelling of 311112421 in words is "three hundred eleven million, one hundred twelve thousand, four hundred twenty-one".