312121130 has 8 divisors (see below), whose sum is σ = 561818052. Its totient is φ = 124848448.

The previous prime is 312121129. The next prime is 312121217. The reversal of 312121130 is 31121213.

It can be written as a sum of positive squares in 2 ways, for example, as 264745441 + 47375689 = 16271^2 + 6883^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15606047 + ... + 15606066.

Almost surely, 2^312121130 is an apocalyptic number.

312121130 is a deficient number, since it is larger than the sum of its proper divisors (249696922).

312121130 is a wasteful number, since it uses less digits than its factorization.

312121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31212120.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 312121130 is about 17666.9502178503. The cubic root of 312121130 is about 678.3300502041.

Adding to 312121130 its reverse (31121213), we get a palindrome (343242343).

The spelling of 312121130 in words is "three hundred twelve million, one hundred twenty-one thousand, one hundred thirty".