31143330132 has 48 divisors (see below), whose sum is σ = 77208727680. Its totient is φ = 9770438016.

The previous prime is 31143330121. The next prime is 31143330133. The reversal of 31143330132 is 23103334113.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143330133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205168 + ... + 323079.

It is an arithmetic number, because the mean of its divisors is an integer number (1608515160).

Almost surely, 2^31143330132 is an apocalyptic number.

It is an amenable number.

31143330132 is an abundant number, since it is smaller than the sum of its proper divisors (46065397548).

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

31143330132 is a wasteful number, since it uses less digits than its factorization.

31143330132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528305 (or 528269 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31143330132 its reverse (23103334113), we get a palindrome (54246664245).

The spelling of 31143330132 in words is "thirty-one billion, one hundred forty-three million, three hundred thirty thousand, one hundred thirty-two".