311244489 has 24 divisors (see below), whose sum is σ = 464903712. Its totient is φ = 200518080.

The previous prime is 311244469. The next prime is 311244497. The reversal of 311244489 is 984442113.

It is a happy number.

It is not a de Polignac number, because 311244489 - 2¹³ = 311236297 is a prime.

It is a super-2 number, since 2×311244489² = 193746263865742242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (311244469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35542 + ... + 43424.

It is an arithmetic number, because the mean of its divisors is an integer number (19370988).

Almost surely, 2^311244489 is an apocalyptic number.

It is an amenable number.

311244489 is a deficient number, since it is larger than the sum of its proper divisors (153659223).

311244489 is a wasteful number, since it uses less digits than its factorization.

311244489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8037 (or 8034 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 311244489 is about 17642.1225763795. The cubic root of 311244489 is about 677.6943893757.

The spelling of 311244489 in words is "three hundred eleven million, two hundred forty-four thousand, four hundred eighty-nine".