311413243 has 4 divisors (see below), whose sum is σ = 311501088. Its totient is φ = 311325400.

The previous prime is 311413241. The next prime is 311413273. The reversal of 311413243 is 342314113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311413243 - 2¹ = 311413241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311413241) 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, 38371 + ... + 45772.

It is an arithmetic number, because the mean of its divisors is an integer number (77875272).

Almost surely, 2^311413243 is an apocalyptic number.

311413243 is a deficient number, since it is larger than the sum of its proper divisors (87845).

311413243 is an equidigital number, since it uses as much as digits as its factorization.

311413243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87844.

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

The square root of 311413243 is about 17646.9046294244. The cubic root of 311413243 is about 677.8168472079.

Adding to 311413243 its reverse (342314113), we get a palindrome (653727356).

The spelling of 311413243 in words is "three hundred eleven million, four hundred thirteen thousand, two hundred forty-three".