312231113131 has 8 divisors (see below), whose sum is σ = 364427804160. Its totient is φ = 261932483688.

The previous prime is 312231113119. The next prime is 312231113137. The reversal of 312231113131 is 131311132213.

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 312231113131 - 2¹¹ = 312231111083 is a prime.

It is a super-2 number, since 2×312231113131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312231113137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474515041 + ... + 474515698.

It is an arithmetic number, because the mean of its divisors is an integer number (45553475520).

Almost surely, 2^312231113131 is an apocalyptic number.

312231113131 is a deficient number, since it is larger than the sum of its proper divisors (52196691029).

312231113131 is an equidigital number, since it uses as much as digits as its factorization.

312231113131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949030793.

The product of its digits is 324, while the sum is 22.

Adding to 312231113131 its reverse (131311132213), we get a palindrome (443542245344).

The spelling of 312231113131 in words is "three hundred twelve billion, two hundred thirty-one million, one hundred thirteen thousand, one hundred thirty-one".