991032103132 has 24 divisors (see below), whose sum is σ = 1789620985040. Its totient is φ = 479838764160.

The previous prime is 991032103097. The next prime is 991032103133. The reversal of 991032103132 is 231301230199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (991032103133) 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, 15836457 + ... + 15898912.

Almost surely, 2^991032103132 is an apocalyptic number.

It is an amenable number.

991032103132 is a deficient number, since it is larger than the sum of its proper divisors (798588881908).

991032103132 is a wasteful number, since it uses less digits than its factorization.

991032103132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31735621 (or 31735619 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 34.

The spelling of 991032103132 in words is "nine hundred ninety-one billion, thirty-two million, one hundred three thousand, one hundred thirty-two".