31111231332 has 48 divisors (see below), whose sum is σ = 76527469760. Its totient is φ = 9809952768.

The previous prime is 31111231331. The next prime is 31111231357. The reversal of 31111231332 is 23313211113.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 31111231299 and 31111231308.

It is not an unprimeable number, because it can be changed into a prime (31111231331) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 52068 + ... + 254820.

Almost surely, 2^31111231332 is an apocalyptic number.

It is an amenable number.

31111231332 is an abundant number, since it is smaller than the sum of its proper divisors (45416238428).

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

31111231332 is a wasteful number, since it uses less digits than its factorization.

31111231332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203452 (or 203450 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

Adding to 31111231332 its reverse (23313211113), we get a palindrome (54424442445).

The spelling of 31111231332 in words is "thirty-one billion, one hundred eleven million, two hundred thirty-one thousand, three hundred thirty-two".