311442272 has 12 divisors (see below), whose sum is σ = 613152036. Its totient is φ = 155721120.

The previous prime is 311442259. The next prime is 311442277. The reversal of 311442272 is 272244113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311442277) by changing a digit.

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, 4866254 + ... + 4866317.

It is an arithmetic number, because the mean of its divisors is an integer number (51096003).

Almost surely, 2^311442272 is an apocalyptic number.

311442272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

311442272 is a deficient number, since it is larger than the sum of its proper divisors (301709764).

311442272 is an equidigital number, since it uses as much as digits as its factorization.

311442272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9732581 (or 9732573 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 311442272 is about 17647.7271057777. The cubic root of 311442272 is about 677.8379078985.

Adding to 311442272 its reverse (272244113), we get a palindrome (583686385).

The spelling of 311442272 in words is "three hundred eleven million, four hundred forty-two thousand, two hundred seventy-two".