1020321120430 has 16 divisors (see below), whose sum is σ = 1895822469504. Its totient is φ = 394963014240.

The previous prime is 1020321120421. The next prime is 1020321120449. The reversal of 1020321120430 is 340211230201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1020321120398 and 1020321120407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1645678917 + ... + 1645679536.

It is an arithmetic number, because the mean of its divisors is an integer number (118488904344).

Almost surely, 2^{1020321120430} is an apocalyptic number.

1020321120430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020321120430 is a deficient number, since it is larger than the sum of its proper divisors (875501349074).

1020321120430 is a wasteful number, since it uses less digits than its factorization.

1020321120430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291358491.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1020321120430 its reverse (340211230201), we get a palindrome (1360532350631).

The spelling of 1020321120430 in words is "one trillion, twenty billion, three hundred twenty-one million, one hundred twenty thousand, four hundred thirty".