312143404431012 has 192 divisors, whose sum is σ = 967592464828416. Its totient is φ = 75820987607040.

The previous prime is 312143404431011. The next prime is 312143404431037. The reversal of 312143404431012 is 210134404341213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (312143404431011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60819258 + ... + 65751569.

It is an arithmetic number, because the mean of its divisors is an integer number (5039544087648).

Almost surely, 2^{312143404431012} is an apocalyptic number.

It is an amenable number.

312143404431012 is an abundant number, since it is smaller than the sum of its proper divisors (655449060397404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312143404431012 is a wasteful number, since it uses less digits than its factorization.

312143404431012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126571026 (or 126571024 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 312143404431012 its reverse (210134404341213), we get a palindrome (522277808772225).

The spelling of 312143404431012 in words is "three hundred twelve trillion, one hundred forty-three billion, four hundred four million, four hundred thirty-one thousand, twelve".