312130001 has 4 divisors (see below), whose sum is σ = 317420400. Its totient is φ = 306839604.

The previous prime is 312129953. The next prime is 312130003. The reversal of 312130001 is 100031213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100031213 = 17 ⋅5884189.

It is a cyclic number.

It is not a de Polignac number, because 312130001 - 2²² = 307935697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312130003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2645111 + ... + 2645228.

It is an arithmetic number, because the mean of its divisors is an integer number (79355100).

Almost surely, 2^312130001 is an apocalyptic number.

It is an amenable number.

312130001 is a deficient number, since it is larger than the sum of its proper divisors (5290399).

312130001 is an equidigital number, since it uses as much as digits as its factorization.

312130001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290398.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 312130001 is about 17667.2012780746. The cubic root of 312130001 is about 678.3364765648.

Adding to 312130001 its reverse (100031213), we get a palindrome (412161214).

The spelling of 312130001 in words is "three hundred twelve million, one hundred thirty thousand, one".