31143000000040 has 64 divisors (see below), whose sum is σ = 73760634072000. Its totient is φ = 11801414338560.

The previous prime is 31143000000029. The next prime is 31143000000071. The reversal of 31143000000040 is 4000000034113.

It is a junction number, because it is equal to n+sod(n) for n = 31142999999960 and 31143000000023.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78721851 + ... + 79116469.

It is an arithmetic number, because the mean of its divisors is an integer number (1152509907375).

Almost surely, 2^{31143000000040} is an apocalyptic number.

It is an amenable number.

31143000000040 is an abundant number, since it is smaller than the sum of its proper divisors (42617634071960).

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

31143000000040 is a wasteful number, since it uses less digits than its factorization.

31143000000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498490 (or 498486 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31143000000040 its reverse (4000000034113), we get a palindrome (35143000034153).

The spelling of 31143000000040 in words is "thirty-one trillion, one hundred forty-three billion, forty", and thus it is an aban number.