31231131332332 has 12 divisors (see below), whose sum is σ = 54654563879496. Its totient is φ = 15615541652480.

The previous prime is 31231131332321. The next prime is 31231131332353. The reversal of 31231131332332 is 23323313113213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31231131332294 and 31231131332303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2898778 + ... + 8418145.

It is an arithmetic number, because the mean of its divisors is an integer number (4554546989958).

Almost surely, 2^{31231131332332} is an apocalyptic number.

It is an amenable number.

31231131332332 is a deficient number, since it is larger than the sum of its proper divisors (23423432547164).

31231131332332 is a wasteful number, since it uses less digits than its factorization.

31231131332332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12006848 (or 12006846 counting only the distinct ones).

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

Adding to 31231131332332 its reverse (23323313113213), we get a palindrome (54554444445545).

The spelling of 31231131332332 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred thirty-one million, three hundred thirty-two thousand, three hundred thirty-two".