312131011 has 8 divisors (see below), whose sum is σ = 315183600. Its totient is φ = 309091488.

The previous prime is 312130979. The next prime is 312131021. The reversal of 312131011 is 110131213.

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

It is a cyclic number.

It is not a de Polignac number, because 312131011 - 2⁵ = 312130979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312130982 and 312131000.

It is not an unprimeable number, because it can be changed into a prime (312131021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48685 + ... + 54721.

It is an arithmetic number, because the mean of its divisors is an integer number (39397950).

Almost surely, 2^312131011 is an apocalyptic number.

312131011 is a deficient number, since it is larger than the sum of its proper divisors (3052589).

312131011 is a wasteful number, since it uses less digits than its factorization.

312131011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6533.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 312131011 is about 17667.2298620921. The cubic root of 312131011 is about 678.3372082248.

Adding to 312131011 its reverse (110131213), we get a palindrome (422262224).

The spelling of 312131011 in words is "three hundred twelve million, one hundred thirty-one thousand, eleven".