31103021030232 has 32 divisors (see below), whose sum is σ = 81138315732480. Its totient is φ = 9916905255840.

The previous prime is 31103021030231. The next prime is 31103021030293. The reversal of 31103021030232 is 23203012030113.

It is a junction number, because it is equal to n+sod(n) for n = 31103021030199 and 31103021030208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103021030231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28173025744 + ... + 28173026847.

It is an arithmetic number, because the mean of its divisors is an integer number (2535572366640).

Almost surely, 2^{31103021030232} is an apocalyptic number.

It is an amenable number.

31103021030232 is an abundant number, since it is smaller than the sum of its proper divisors (50035294702248).

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

31103021030232 is a wasteful number, since it uses less digits than its factorization.

31103021030232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56346052623 (or 56346052619 counting only the distinct ones).

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

Adding to 31103021030232 its reverse (23203012030113), we get a palindrome (54306033060345).

The spelling of 31103021030232 in words is "thirty-one trillion, one hundred three billion, twenty-one million, thirty thousand, two hundred thirty-two".