312133330 has 16 divisors (see below), whose sum is σ = 591410880. Its totient is φ = 118282032.

The previous prime is 312133321. The next prime is 312133333. The reversal of 312133330 is 33331213.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 312133298 and 312133307.

It is not an unprimeable number, because it can be changed into a prime (312133333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821214 + ... + 821593.

It is an arithmetic number, because the mean of its divisors is an integer number (36963180).

Almost surely, 2^312133330 is an apocalyptic number.

312133330 is a deficient number, since it is larger than the sum of its proper divisors (279277550).

312133330 is a wasteful number, since it uses less digits than its factorization.

312133330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642833.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 312133330 is about 17667.2954919535. The cubic root of 312133330 is about 678.3388881391.

Adding to 312133330 its reverse (33331213), we get a palindrome (345464543).

It can be divided in two parts, 31213 and 3330, that added together give a palindrome (34543).

The spelling of 312133330 in words is "three hundred twelve million, one hundred thirty-three thousand, three hundred thirty".