1023043205430 has 160 divisors (see below), whose sum is σ = 2768304211200. Its totient is φ = 271082852928.

The previous prime is 1023043205407. The next prime is 1023043205489. The reversal of 1023043205430 is 345023403201.

1023043205430 is a `hidden beast` number, since 1 + 0 + 2 + 304 + 320 + 5 + 4 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1023043205394 and 1023043205403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 362908561 + ... + 362911379.

It is an arithmetic number, because the mean of its divisors is an integer number (17301901320).

Almost surely, 2^{1023043205430} is an apocalyptic number.

1023043205430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023043205430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1384152105600).

1023043205430 is an abundant number, since it is smaller than the sum of its proper divisors (1745261005770).

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

1023043205430 is a wasteful number, since it uses less digits than its factorization.

1023043205430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5520 (or 5511 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 1023043205430 its reverse (345023403201), we get a palindrome (1368066608631).

The spelling of 1023043205430 in words is "one trillion, twenty-three billion, forty-three million, two hundred five thousand, four hundred thirty".