311320412 has 12 divisors (see below), whose sum is σ = 586719336. Its totient is φ = 143686320.

The previous prime is 311320381. The next prime is 311320417. The reversal of 311320412 is 214023113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311320417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2993414 + ... + 2993517.

It is an arithmetic number, because the mean of its divisors is an integer number (48893278).

Almost surely, 2^311320412 is an apocalyptic number.

It is an amenable number.

311320412 is a deficient number, since it is larger than the sum of its proper divisors (275398924).

311320412 is a wasteful number, since it uses less digits than its factorization.

311320412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5986948 (or 5986946 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 311320412 is about 17644.2741987309. The cubic root of 311320412 is about 677.7494890479.

Adding to 311320412 its reverse (214023113), we get a palindrome (525343525).

The spelling of 311320412 in words is "three hundred eleven million, three hundred twenty thousand, four hundred twelve".