31103323232 has 12 divisors (see below), whose sum is σ = 61234667676. Its totient is φ = 15551661600.

The previous prime is 31103323187. The next prime is 31103323259. The reversal of 31103323232 is 23232330113.

It is a junction number, because it is equal to n+sod(n) for n = 31103323198 and 31103323207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485989394 + ... + 485989457.

It is an arithmetic number, because the mean of its divisors is an integer number (5102888973).

Almost surely, 2^31103323232 is an apocalyptic number.

31103323232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31103323232 is a deficient number, since it is larger than the sum of its proper divisors (30131344444).

31103323232 is an equidigital number, since it uses as much as digits as its factorization.

31103323232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971978861 (or 971978853 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31103323232 its reverse (23232330113), we get a palindrome (54335653345).

The spelling of 31103323232 in words is "thirty-one billion, one hundred three million, three hundred twenty-three thousand, two hundred thirty-two".