311230040 has 32 divisors (see below), whose sum is σ = 763929360. Its totient is φ = 113174400.

The previous prime is 311230039. The next prime is 311230061. The reversal of 311230040 is 40032113.

It is a junction number, because it is equal to n+sod(n) for n = 311229997 and 311230024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353231 + ... + 354110.

Almost surely, 2^311230040 is an apocalyptic number.

It is an amenable number.

311230040 is an abundant number, since it is smaller than the sum of its proper divisors (452699320).

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

311230040 is a wasteful number, since it uses less digits than its factorization.

311230040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707363 (or 707359 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 311230040 is about 17641.7130687470. The cubic root of 311230040 is about 677.6839022741.

Adding to 311230040 its reverse (40032113), we get a palindrome (351262153).

The spelling of 311230040 in words is "three hundred eleven million, two hundred thirty thousand, forty".