311343421 has 8 divisors (see below), whose sum is σ = 315048960. Its totient is φ = 307657728.

The previous prime is 311343401. The next prime is 311343497. The reversal of 311343421 is 124343113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311343421 - 2⁹ = 311342909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311343392 and 311343401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311343401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27870 + ... + 37408.

It is an arithmetic number, because the mean of its divisors is an integer number (39381120).

Almost surely, 2^311343421 is an apocalyptic number.

It is an amenable number.

311343421 is a deficient number, since it is larger than the sum of its proper divisors (3705539).

311343421 is a wasteful number, since it uses less digits than its factorization.

311343421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9923.

The product of its digits is 864, while the sum is 22.

The square root of 311343421 is about 17644.9262112370. The cubic root of 311343421 is about 677.7661856230.

Adding to 311343421 its reverse (124343113), we get a palindrome (435686534).

It can be divided in two parts, 3 and 11343421, that added together give a square (11343424 = 3368²).

The spelling of 311343421 in words is "three hundred eleven million, three hundred forty-three thousand, four hundred twenty-one".