311223434 has 8 divisors (see below), whose sum is σ = 468695808. Its totient is φ = 154991500.

The previous prime is 311223427. The next prime is 311223443. The reversal of 311223434 is 434322113.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309482 + ... + 310485.

It is an arithmetic number, because the mean of its divisors is an integer number (58586976).

Almost surely, 2^311223434 is an apocalyptic number.

311223434 is a deficient number, since it is larger than the sum of its proper divisors (157472374).

311223434 is a wasteful number, since it uses less digits than its factorization.

311223434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620220.

The product of its digits is 1728, while the sum is 23.

The square root of 311223434 is about 17641.5258410377. The cubic root of 311223434 is about 677.6791075232.

Adding to 311223434 its reverse (434322113), we get a palindrome (745545547).

The spelling of 311223434 in words is "three hundred eleven million, two hundred twenty-three thousand, four hundred thirty-four".