31143544014 has 32 divisors (see below), whose sum is σ = 69231625344. Its totient is φ = 9259371680.

The previous prime is 31143544001. The next prime is 31143544037. The reversal of 31143544014 is 41044534113.

It is a congruent number.

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, 4448124 + ... + 4455119.

It is an arithmetic number, because the mean of its divisors is an integer number (2163488292).

Almost surely, 2^31143544014 is an apocalyptic number.

31143544014 is an abundant number, since it is smaller than the sum of its proper divisors (38088081330).

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

31143544014 is a wasteful number, since it uses less digits than its factorization.

31143544014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8903312.

The product of its (nonzero) digits is 11520, while the sum is 30.

Subtracting 31143544014 from its reverse (41044534113), we obtain a palindrome (9900990099).

The spelling of 31143544014 in words is "thirty-one billion, one hundred forty-three million, five hundred forty-four thousand, fourteen".