31103213000232 has 32 divisors (see below), whose sum is σ = 78351605275680. Its totient is φ = 10288594630080.

The previous prime is 31103213000231. The next prime is 31103213000303. The reversal of 31103213000232 is 23200031230113.

It is a junction number, because it is equal to n+sod(n) for n = 31103213000199 and 31103213000208.

It is not an unprimeable number, because it can be changed into a prime (31103213000231) 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 7 ways as a sum of consecutive naturals, for example, 4946436583 + ... + 4946442870.

It is an arithmetic number, because the mean of its divisors is an integer number (2448487664865).

Almost surely, 2^{31103213000232} is an apocalyptic number.

It is an amenable number.

31103213000232 is an abundant number, since it is smaller than the sum of its proper divisors (47248392275448).

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

31103213000232 is a wasteful number, since it uses less digits than its factorization.

31103213000232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9892879593 (or 9892879589 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31103213000232 its reverse (23200031230113), we get a palindrome (54303244230345).

The spelling of 31103213000232 in words is "thirty-one trillion, one hundred three billion, two hundred thirteen million, two hundred thirty-two", and thus it is an aban number.