1301213131 has 2 divisors, whose sum is σ = 1301213132. Its totient is φ = 1301213130.

The previous prime is 1301213071. The next prime is 1301213149. The reversal of 1301213131 is 1313121031.

It is a strong prime.

It is an emirp because it is prime and its reverse (1313121031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1301213131 - 2¹¹ = 1301211083 is a prime.

It is a super-2 number, since 2×1301213131² = 3386311224573646322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1301213191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650606565 + 650606566.

It is an arithmetic number, because the mean of its divisors is an integer number (650606566).

Almost surely, 2^1301213131 is an apocalyptic number.

1301213131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301213131 is an equidigital number, since it uses as much as digits as its factorization.

1301213131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1301213131 is about 36072.3319318283. The cubic root of 1301213131 is about 1091.7322653457.

Adding to 1301213131 its reverse (1313121031), we get a palindrome (2614334162).

The spelling of 1301213131 in words is "one billion, three hundred one million, two hundred thirteen thousand, one hundred thirty-one".