1232981321 has 32 divisors (see below), whose sum is σ = 1583318016. Its totient is φ = 942336000.

The previous prime is 1232981317. The next prime is 1232981329. The reversal of 1232981321 is 1231892321.

It is a cyclic number.

It is not a de Polignac number, because 1232981321 - 2² = 1232981317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232981329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67181 + ... + 83541.

It is an arithmetic number, because the mean of its divisors is an integer number (49478688).

Almost surely, 2^1232981321 is an apocalyptic number.

1232981321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1232981321 is a deficient number, since it is larger than the sum of its proper divisors (350336695).

1232981321 is a wasteful number, since it uses less digits than its factorization.

1232981321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16433.

The product of its digits is 5184, while the sum is 32.

The square root of 1232981321 is about 35113.8337553734. The cubic root of 1232981321 is about 1072.3062379826.

The spelling of 1232981321 in words is "one billion, two hundred thirty-two million, nine hundred eighty-one thousand, three hundred twenty-one".