312131103 has 8 divisors (see below), whose sum is σ = 416924208. Its totient is φ = 207712704.

The previous prime is 312131087. The next prime is 312131119. The reversal of 312131103 is 301131213.

It is an interprime number because it is at equal distance from previous prime (312131087) and next prime (312131119).

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

It is not a de Polignac number, because 312131103 - 2⁴ = 312131087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312131143) 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 7 ways as a sum of consecutive naturals, for example, 91726 + ... + 95067.

It is an arithmetic number, because the mean of its divisors is an integer number (52115526).

Almost surely, 2^312131103 is an apocalyptic number.

312131103 is a deficient number, since it is larger than the sum of its proper divisors (104793105).

312131103 is a wasteful number, since it uses less digits than its factorization.

312131103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187353.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 312131103 is about 17667.2324657825. The cubic root of 312131103 is about 678.3372748709.

Adding to 312131103 its reverse (301131213), we get a palindrome (613262316).

The spelling of 312131103 in words is "three hundred twelve million, one hundred thirty-one thousand, one hundred three".