1231032998 has 16 divisors (see below), whose sum is σ = 1989277920. Its totient is φ = 567973056.

The previous prime is 1231032997. The next prime is 1231033007. The reversal of 1231032998 is 8992301321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231032991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91658 + ... + 104226.

It is an arithmetic number, because the mean of its divisors is an integer number (124329870).

Almost surely, 2^1231032998 is an apocalyptic number.

1231032998 is a deficient number, since it is larger than the sum of its proper divisors (758244922).

1231032998 is a wasteful number, since it uses less digits than its factorization.

1231032998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16351.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1231032998 is about 35086.0798323210. The cubic root of 1231032998 is about 1071.7411306639.

The spelling of 1231032998 in words is "one billion, two hundred thirty-one million, thirty-two thousand, nine hundred ninety-eight".