1023404032100 has 36 divisors (see below), whose sum is σ = 2221251515700. Its totient is φ = 409275941760.

The previous prime is 1023404032099. The next prime is 1023404032171. The reversal of 1023404032100 is 12304043201.

It can be written as a sum of positive squares in 6 ways, for example, as 347904147556 + 675499884544 = 589834^2 + 821888^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 589595 + ... + 1547394.

Almost surely, 2^{1023404032100} is an apocalyptic number.

1023404032100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023404032100 is an abundant number, since it is smaller than the sum of its proper divisors (1197847483600).

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

1023404032100 is a wasteful number, since it uses less digits than its factorization.

1023404032100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141792 (or 2141785 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1023404032100 its reverse (12304043201), we get a palindrome (1035708075301).

The spelling of 1023404032100 in words is "one trillion, twenty-three billion, four hundred four million, thirty-two thousand, one hundred".