1301211481 has 4 divisors (see below), whose sum is σ = 1301715892. Its totient is φ = 1300707072.

The previous prime is 1301211473. The next prime is 1301211491. The reversal of 1301211481 is 1841121031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 931226256 + 369985225 = 30516^2 + 19235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301211481 - 2³ = 1301211473 is a prime.

It is a super-2 number, since 2×1301211481² = 3386302636572426722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301211491) 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 3 ways as a sum of consecutive naturals, for example, 248316 + ... + 253501.

It is an arithmetic number, because the mean of its divisors is an integer number (325428973).

Almost surely, 2^1301211481 is an apocalyptic number.

It is an amenable number.

1301211481 is a deficient number, since it is larger than the sum of its proper divisors (504411).

1301211481 is an equidigital number, since it uses as much as digits as its factorization.

1301211481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504410.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 1301211481 is about 36072.3090611067. The cubic root of 1301211481 is about 1091.7318038894.

The spelling of 1301211481 in words is "one billion, three hundred one million, two hundred eleven thousand, four hundred eighty-one".