311973396 has 36 divisors (see below), whose sum is σ = 846786528. Its totient is φ = 89135088.

The previous prime is 311973377. The next prime is 311973397. The reversal of 311973396 is 693379113.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311973397) 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 11 ways as a sum of consecutive naturals, for example, 264696 + ... + 265871.

It is an arithmetic number, because the mean of its divisors is an integer number (23521848).

Almost surely, 2^311973396 is an apocalyptic number.

It is an amenable number.

311973396 is an abundant number, since it is smaller than the sum of its proper divisors (534813132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311973396 is a wasteful number, since it uses less digits than its factorization.

311973396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530588 (or 530579 counting only the distinct ones).

The product of its digits is 91854, while the sum is 42.

The square root of 311973396 is about 17662.7686391460. The cubic root of 311973396 is about 678.2230103221.

The spelling of 311973396 in words is "three hundred eleven million, nine hundred seventy-three thousand, three hundred ninety-six".