31143230134312 has 8 divisors (see below), whose sum is σ = 58393556501850. Its totient is φ = 15571615067152.

The previous prime is 31143230134279. The next prime is 31143230134327. The reversal of 31143230134312 is 21343103234113.

It can be written as a sum of positive squares in only one way, i.e., 20804600174436 + 10338629959876 = 4561206^2 + 3215374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1946451883387 + ... + 1946451883402.

Almost surely, 2^{31143230134312} is an apocalyptic number.

It is an amenable number.

31143230134312 is a deficient number, since it is larger than the sum of its proper divisors (27250326367538).

31143230134312 is a wasteful number, since it uses less digits than its factorization.

31143230134312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892903766795 (or 3892903766791 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 31143230134312 its reverse (21343103234113), we get a palindrome (52486333368425).

The spelling of 31143230134312 in words is "thirty-one trillion, one hundred forty-three billion, two hundred thirty million, one hundred thirty-four thousand, three hundred twelve".