1020132321 has 16 divisors (see below), whose sum is σ = 1495974144. Its totient is φ = 614415744.

The previous prime is 1020132263. The next prime is 1020132343. The reversal of 1020132321 is 1232310201.

It is not a de Polignac number, because 1020132321 - 2⁹ = 1020131809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020132321.

It is not an unprimeable number, because it can be changed into a prime (1020132121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276436 + ... + 280101.

It is an arithmetic number, because the mean of its divisors is an integer number (93498384).

Almost surely, 2^1020132321 is an apocalyptic number.

It is an amenable number.

1020132321 is a deficient number, since it is larger than the sum of its proper divisors (475841823).

1020132321 is a wasteful number, since it uses less digits than its factorization.

1020132321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556600.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1020132321 is about 31939.5103437733. The cubic root of 1020132321 is about 1006.6662362151. Note that the first 3 decimals are identical.

Adding to 1020132321 its reverse (1232310201), we get a palindrome (2252442522).

The spelling of 1020132321 in words is "one billion, twenty million, one hundred thirty-two thousand, three hundred twenty-one".