31143000002000 has 80 divisors (see below), whose sum is σ = 77055024775872. Its totient is φ = 12167497641600.

The previous prime is 31143000001991. The next prime is 31143000002003. The reversal of 31143000002000 is 20000034113.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143000002003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180977954 + ... + 181149953.

Almost surely, 2^{31143000002000} is an apocalyptic number.

It is an amenable number.

31143000002000 is an abundant number, since it is smaller than the sum of its proper divisors (45912024773872).

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

31143000002000 is a wasteful number, since it uses less digits than its factorization.

31143000002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362127973 (or 362127957 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 31143000002000 its reverse (20000034113), we get a palindrome (31163000036113).

The spelling of 31143000002000 in words is "thirty-one trillion, one hundred forty-three billion, two thousand".