312905030 has 16 divisors (see below), whose sum is σ = 576967104. Its totient is φ = 122109120.

The previous prime is 312905029. The next prime is 312905063. The reversal of 312905030 is 30509213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 312904987 and 312905005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381182 + ... + 382001.

It is an arithmetic number, because the mean of its divisors is an integer number (36060444).

Almost surely, 2^312905030 is an apocalyptic number.

312905030 is a deficient number, since it is larger than the sum of its proper divisors (264062074).

312905030 is a wasteful number, since it uses less digits than its factorization.

312905030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763231.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 312905030 is about 17689.1217984387. The cubic root of 312905030 is about 678.8974563952.

The spelling of 312905030 in words is "three hundred twelve million, nine hundred five thousand, thirty".