1301505431 has 6 divisors (see below), whose sum is σ = 1382568360. Its totient is φ = 1224946016.

The previous prime is 1301505421. The next prime is 1301505433. The reversal of 1301505431 is 1345051031.

It is not a de Polignac number, because 1301505431 - 2¹⁴ = 1301489047 is a prime.

It is a super-2 number, since 2×1301505431² = 3387832773844991522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1301505397 and 1301505406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301505433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2251451 + ... + 2252028.

It is an arithmetic number, because the mean of its divisors is an integer number (230428060).

Almost surely, 2^1301505431 is an apocalyptic number.

1301505431 is a deficient number, since it is larger than the sum of its proper divisors (81062929).

1301505431 is an equidigital number, since it uses as much as digits as its factorization.

1301505431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4503513 (or 4503496 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1301505431 is about 36076.3832860225. The cubic root of 1301505431 is about 1091.8140068738.

Adding to 1301505431 its reverse (1345051031), we get a palindrome (2646556462).

The spelling of 1301505431 in words is "one billion, three hundred one million, five hundred five thousand, four hundred thirty-one".