1301323031 has 2 divisors, whose sum is σ = 1301323032. Its totient is φ = 1301323030.

The previous prime is 1301323027. The next prime is 1301323069. The reversal of 1301323031 is 1303231031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1301323031 - 2² = 1301323027 is a prime.

It is a super-2 number, since 2×1301323031² = 3386883262022053922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301323631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650661515 + 650661516.

It is an arithmetic number, because the mean of its divisors is an integer number (650661516).

Almost surely, 2^1301323031 is an apocalyptic number.

1301323031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301323031 is an equidigital number, since it uses as much as digits as its factorization.

1301323031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1301323031 is about 36073.8552278517. The cubic root of 1301323031 is about 1091.7630002538.

Adding to 1301323031 its reverse (1303231031), we get a palindrome (2604554062).

The spelling of 1301323031 in words is "one billion, three hundred one million, three hundred twenty-three thousand, thirty-one".