311043412 has 6 divisors (see below), whose sum is σ = 544325978. Its totient is φ = 155521704.

The previous prime is 311043409. The next prime is 311043431. The reversal of 311043412 is 214340113.

It can be written as a sum of positive squares in only one way, i.e., 286083396 + 24960016 = 16914^2 + 4996^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 311043412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38880423 + ... + 38880430.

Almost surely, 2^311043412 is an apocalyptic number.

It is an amenable number.

311043412 is a deficient number, since it is larger than the sum of its proper divisors (233282566).

311043412 is a wasteful number, since it uses less digits than its factorization.

311043412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77760857 (or 77760855 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 311043412 is about 17636.4228799380. The cubic root of 311043412 is about 677.5484182659.

Adding to 311043412 its reverse (214340113), we get a palindrome (525383525).

The spelling of 311043412 in words is "three hundred eleven million, forty-three thousand, four hundred twelve".