312135101 has 4 divisors (see below), whose sum is σ = 312180000. Its totient is φ = 312090204.

The previous prime is 312135023. The next prime is 312135119. The reversal of 312135101 is 101531213.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312135101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312135101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312135121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9551 + ... + 26748.

It is an arithmetic number, because the mean of its divisors is an integer number (78045000).

Almost surely, 2^312135101 is an apocalyptic number.

It is an amenable number.

312135101 is a deficient number, since it is larger than the sum of its proper divisors (44899).

312135101 is an equidigital number, since it uses as much as digits as its factorization.

312135101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44898.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 312135101 is about 17667.3456127399. The cubic root of 312135101 is about 678.3401710694.

Adding to 312135101 its reverse (101531213), we get a palindrome (413666314).

The spelling of 312135101 in words is "three hundred twelve million, one hundred thirty-five thousand, one hundred one".