1301323139 has 2 divisors, whose sum is σ = 1301323140. Its totient is φ = 1301323138.

The previous prime is 1301323117. The next prime is 1301323159. The reversal of 1301323139 is 9313231031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1301323139 - 2¹⁶ = 1301257603 is a prime.

It is a super-4 number, since 4×1301323139⁴ (a number of 38 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1301323159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650661569 + 650661570.

It is an arithmetic number, because the mean of its divisors is an integer number (650661570).

Almost surely, 2^1301323139 is an apocalyptic number.

1301323139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301323139 is an equidigital number, since it uses as much as digits as its factorization.

1301323139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 1301323139 is about 36073.8567247806. The cubic root of 1301323139 is about 1091.7630304565.

The spelling of 1301323139 in words is "one billion, three hundred one million, three hundred twenty-three thousand, one hundred thirty-nine".