31133304342 has 72 divisors (see below), whose sum is σ = 81374942376. Its totient is φ = 8895223008.

The previous prime is 31133304337. The next prime is 31133304353. The reversal of 31133304342 is 24340333113.

31133304342 is a `hidden beast` number, since 3 + 1 + 13 + 3 + 304 + 342 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 629863 + ... + 677490.

It is an arithmetic number, because the mean of its divisors is an integer number (1130207533).

Almost surely, 2^31133304342 is an apocalyptic number.

31133304342 is an abundant number, since it is smaller than the sum of its proper divisors (50241638034).

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

31133304342 is a wasteful number, since it uses less digits than its factorization.

31133304342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307384 (or 1307365 counting only the distinct ones).

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

Adding to 31133304342 its reverse (24340333113), we get a palindrome (55473637455).

The spelling of 31133304342 in words is "thirty-one billion, one hundred thirty-three million, three hundred four thousand, three hundred forty-two".