1350340261 has 4 divisors (see below), whose sum is σ = 1351284012. Its totient is φ = 1349396512.

The previous prime is 1350340231. The next prime is 1350340291. The reversal of 1350340261 is 1620430531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1620430531 = 17 ⋅95319443.

It is an interprime number because it is at equal distance from previous prime (1350340231) and next prime (1350340291).

It can be written as a sum of positive squares in 2 ways, for example, as 649944036 + 700396225 = 25494^2 + 26465^2 .

It is a cyclic number.

It is not a de Polignac number, because 1350340261 - 2¹⁵ = 1350307493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1350340231) 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, 469726 + ... + 472591.

It is an arithmetic number, because the mean of its divisors is an integer number (337821003).

Almost surely, 2^1350340261 is an apocalyptic number.

It is an amenable number.

1350340261 is a deficient number, since it is larger than the sum of its proper divisors (943751).

1350340261 is an equidigital number, since it uses as much as digits as its factorization.

1350340261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943750.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1350340261 is about 36746.9762157378. The cubic root of 1350340261 is about 1105.3022960322.

Adding to 1350340261 its reverse (1620430531), we get a palindrome (2970770792).

The spelling of 1350340261 in words is "one billion, three hundred fifty million, three hundred forty thousand, two hundred sixty-one".