1371261317 has 8 divisors (see below), whose sum is σ = 1418974200. Its totient is φ = 1323577024.

The previous prime is 1371261313. The next prime is 1371261341. The reversal of 1371261317 is 7131621731.

It can be written as a sum of positive squares in 4 ways, for example, as 938870881 + 432390436 = 30641^2 + 20794^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1371261317 - 2² = 1371261313 is a prime.

It is a super-4 number, since 4×1371261317⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371261313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147359 + ... + 156387.

It is an arithmetic number, because the mean of its divisors is an integer number (177371775).

Almost surely, 2^1371261317 is an apocalyptic number.

It is an amenable number.

1371261317 is a deficient number, since it is larger than the sum of its proper divisors (47712883).

1371261317 is an equidigital number, since it uses as much as digits as its factorization.

1371261317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14295.

The product of its digits is 5292, while the sum is 32.

The square root of 1371261317 is about 37030.5457291680. The cubic root of 1371261317 is about 1110.9812811611.

The spelling of 1371261317 in words is "one billion, three hundred seventy-one million, two hundred sixty-one thousand, three hundred seventeen".