1321103430 has 48 divisors (see below), whose sum is σ = 3447072720. Its totient is φ = 351042624.

The previous prime is 1321103423. The next prime is 1321103449. The reversal of 1321103430 is 343011231.

1321103430 is a `hidden beast` number, since 1 + 321 + 1 + 0 + 343 + 0 = 666.

1321103430 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 465 + ... + 51404.

It is an arithmetic number, because the mean of its divisors is an integer number (71814015).

Almost surely, 2^1321103430 is an apocalyptic number.

1321103430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321103430 is an abundant number, since it is smaller than the sum of its proper divisors (2125969290).

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

1321103430 is a wasteful number, since it uses less digits than its factorization.

1321103430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52165 (or 52162 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1321103430 is about 36346.9865325862. The cubic root of 1321103430 is about 1097.2668869762.

Adding to 1321103430 its reverse (343011231), we get a palindrome (1664114661).

The spelling of 1321103430 in words is "one billion, three hundred twenty-one million, one hundred three thousand, four hundred thirty".