1301321929 has 2 divisors, whose sum is σ = 1301321930. Its totient is φ = 1301321928.

The previous prime is 1301321927. The next prime is 1301321969. The reversal of 1301321929 is 9291231031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1261883529 + 39438400 = 35523^2 + 6280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301321929 - 2¹ = 1301321927 is a prime.

Together with 1301321927, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1301321929.

It is not a weakly prime, because it can be changed into another prime (1301321927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650660964 + 650660965.

It is an arithmetic number, because the mean of its divisors is an integer number (650660965).

Almost surely, 2^1301321929 is an apocalyptic number.

It is an amenable number.

1301321929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301321929 is an equidigital number, since it uses as much as digits as its factorization.

1301321929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 1301321929 is about 36073.8399536284. The cubic root of 1301321929 is about 1091.7626920744.

The spelling of 1301321929 in words is "one billion, three hundred one million, three hundred twenty-one thousand, nine hundred twenty-nine".