2130321043 has 2 divisors, whose sum is σ = 2130321044. Its totient is φ = 2130321042.

The previous prime is 2130321001. The next prime is 2130321103. The reversal of 2130321043 is 3401230312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130321043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2130321043.

It is not a weakly prime, because it can be changed into another prime (2130321143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065160521 + 1065160522.

It is an arithmetic number, because the mean of its divisors is an integer number (1065160522).

Almost surely, 2^2130321043 is an apocalyptic number.

2130321043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130321043 is an equidigital number, since it uses as much as digits as its factorization.

2130321043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2130321043 is about 46155.4010165658. The cubic root of 2130321043 is about 1286.7129910821.

Adding to 2130321043 its reverse (3401230312), we get a palindrome (5531551355).

The spelling of 2130321043 in words is "two billion, one hundred thirty million, three hundred twenty-one thousand, forty-three".