31132322240 has 56 divisors (see below), whose sum is σ = 74631499200. Its totient is φ = 12369333248.

The previous prime is 31132322233. The next prime is 31132322293. The reversal of 31132322240 is 4222323113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278792 + ... + 374151.

Almost surely, 2^31132322240 is an apocalyptic number.

It is an amenable number.

31132322240 is an abundant number, since it is smaller than the sum of its proper divisors (43499176960).

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

31132322240 is a wasteful number, since it uses less digits than its factorization.

31132322240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653109 (or 653099 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31132322240 its reverse (4222323113), we get a palindrome (35354645353).

The spelling of 31132322240 in words is "thirty-one billion, one hundred thirty-two million, three hundred twenty-two thousand, two hundred forty".