311494897 has 16 divisors (see below), whose sum is σ = 373409280. Its totient is φ = 254242368.

The previous prime is 311494891. The next prime is 311494901. The reversal of 311494897 is 798494113.

It is a cyclic number.

It is not a de Polignac number, because 311494897 - 2³ = 311494889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311494891) 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 in 15 ways as a sum of consecutive naturals, for example, 622 + ... + 24967.

It is an arithmetic number, because the mean of its divisors is an integer number (23338080).

Almost surely, 2^311494897 is an apocalyptic number.

311494897 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

311494897 is a deficient number, since it is larger than the sum of its proper divisors (61914383).

311494897 is a wasteful number, since it uses less digits than its factorization.

311494897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25680.

The product of its digits is 217728, while the sum is 46.

The square root of 311494897 is about 17649.2180280034. The cubic root of 311494897 is about 677.8760842736.

It can be divided in two parts, 31149 and 4897, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 311494897 in words is "three hundred eleven million, four hundred ninety-four thousand, eight hundred ninety-seven".