311449729 has 4 divisors (see below), whose sum is σ = 327841840. Its totient is φ = 295057620.

The previous prime is 311449717. The next prime is 311449753. The reversal of 311449729 is 927944113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311449729 - 2⁹ = 311449217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311449691 and 311449700.

It is not an unprimeable number, because it can be changed into a prime (311449709) 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, 8196027 + ... + 8196064.

It is an arithmetic number, because the mean of its divisors is an integer number (81960460).

Almost surely, 2^311449729 is an apocalyptic number.

It is an amenable number.

311449729 is a deficient number, since it is larger than the sum of its proper divisors (16392111).

311449729 is a wasteful number, since it uses less digits than its factorization.

311449729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16392110.

The product of its digits is 54432, while the sum is 40.

The square root of 311449729 is about 17647.9383781789. The cubic root of 311449729 is about 677.8433177796.

The spelling of 311449729 in words is "three hundred eleven million, four hundred forty-nine thousand, seven hundred twenty-nine".