1301621017 has 4 divisors (see below), whose sum is σ = 1301829300. Its totient is φ = 1301412736.

The previous prime is 1301621003. The next prime is 1301621047. The reversal of 1301621017 is 7101261031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7101261031 = 71 ⋅100017761.

It can be written as a sum of positive squares in 2 ways, for example, as 580376281 + 721244736 = 24091^2 + 26856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301621017 is a prime.

It is a super-2 number, since 2×1301621017² = 3388434543792228578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301621047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94468 + ... + 107365.

It is an arithmetic number, because the mean of its divisors is an integer number (325457325).

Almost surely, 2^1301621017 is an apocalyptic number.

It is an amenable number.

1301621017 is a deficient number, since it is larger than the sum of its proper divisors (208283).

1301621017 is an equidigital number, since it uses as much as digits as its factorization.

1301621017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208282.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1301621017 is about 36077.9852125919. The cubic root of 1301621017 is about 1091.8463270560.

Adding to 1301621017 its reverse (7101261031), we get a palindrome (8402882048).

The spelling of 1301621017 in words is "one billion, three hundred one million, six hundred twenty-one thousand, seventeen".