311423230 has 32 divisors (see below), whose sum is σ = 573658848. Its totient is φ = 121680000.

The previous prime is 311423227. The next prime is 311423237. The reversal of 311423230 is 32324113.

It is a junction number, because it is equal to n+sod(n) for n = 311423198 and 311423207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311423237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131860 + ... + 134200.

It is an arithmetic number, because the mean of its divisors is an integer number (17926839).

Almost surely, 2^311423230 is an apocalyptic number.

311423230 is a deficient number, since it is larger than the sum of its proper divisors (262235618).

311423230 is a wasteful number, since it uses less digits than its factorization.

311423230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 311423230 is about 17647.1875946282. The cubic root of 311423230 is about 677.8240929761.

Adding to 311423230 its reverse (32324113), we get a palindrome (343747343).

The spelling of 311423230 in words is "three hundred eleven million, four hundred twenty-three thousand, two hundred thirty".