312500030 has 32 divisors (see below), whose sum is σ = 593049600. Its totient is φ = 118232352.

The previous prime is 312500017. The next prime is 312500059. The reversal of 312500030 is 30005213.

It is a junction number, because it is equal to n+sod(n) for n = 312499978 and 312500014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196619 + ... + 198201.

It is an arithmetic number, because the mean of its divisors is an integer number (18532800).

Almost surely, 2^312500030 is an apocalyptic number.

312500030 is a deficient number, since it is larger than the sum of its proper divisors (280549570).

312500030 is a wasteful number, since it uses less digits than its factorization.

312500030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 312500030 is about 17677.6703781918. The cubic root of 312500030 is about 678.6044258641.

Adding to 312500030 its reverse (30005213), we get a palindrome (342505243).

The spelling of 312500030 in words is "three hundred twelve million, five hundred thousand, thirty".