31331132231332 has 12 divisors (see below), whose sum is σ = 56104585623856. Its totient is φ = 15301250624520.

The previous prime is 31331132231173. The next prime is 31331132231351. The reversal of 31331132231332 is 23313223113313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31331132231294 and 31331132231303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91078872594 + ... + 91078872937.

Almost surely, 2^{31331132231332} is an apocalyptic number.

It is an amenable number.

31331132231332 is a deficient number, since it is larger than the sum of its proper divisors (24773453392524).

31331132231332 is a wasteful number, since it uses less digits than its factorization.

31331132231332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182157745578 (or 182157745576 counting only the distinct ones).

The product of its digits is 17496, while the sum is 31.

Adding to 31331132231332 its reverse (23313223113313), we get a palindrome (54644355344645).

The spelling of 31331132231332 in words is "thirty-one trillion, three hundred thirty-one billion, one hundred thirty-two million, two hundred thirty-one thousand, three hundred thirty-two".