312213030 has 32 divisors (see below), whose sum is σ = 769565664. Its totient is φ = 81006336.

The previous prime is 312213029. The next prime is 312213047. The reversal of 312213030 is 30312213.

312213030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×312213030² = 194953952203561800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139527 + ... + 141746.

It is an arithmetic number, because the mean of its divisors is an integer number (24048927).

Almost surely, 2^312213030 is an apocalyptic number.

312213030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

312213030 is an abundant number, since it is smaller than the sum of its proper divisors (457352634).

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

312213030 is a wasteful number, since it uses less digits than its factorization.

312213030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281320.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 312213030 is about 17669.5509280796. The cubic root of 312213030 is about 678.3966188195.

Adding to 312213030 its reverse (30312213), we get a palindrome (342525243).

The spelling of 312213030 in words is "three hundred twelve million, two hundred thirteen thousand, thirty".