31143330234 has 96 divisors (see below), whose sum is σ = 73123015680. Its totient is φ = 9543744000.

The previous prime is 31143330223. The next prime is 31143330311. The reversal of 31143330234 is 43203334113.

31143330234 is a `hidden beast` number, since 311 + 43 + 3 + 302 + 3 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 31143330198 and 31143330207.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2361559 + ... + 2374709.

It is an arithmetic number, because the mean of its divisors is an integer number (761698080).

Almost surely, 2^31143330234 is an apocalyptic number.

31143330234 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31143330234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36561507840).

31143330234 is an abundant number, since it is smaller than the sum of its proper divisors (41979685446).

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

31143330234 is a wasteful number, since it uses less digits than its factorization.

31143330234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13356 (or 13353 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 31143330234 its reverse (43203334113), we get a palindrome (74346664347).

The spelling of 31143330234 in words is "thirty-one billion, one hundred forty-three million, three hundred thirty thousand, two hundred thirty-four".