1117340261 has 4 divisors (see below), whose sum is σ = 1117915500. Its totient is φ = 1116765024.

The previous prime is 1117340243. The next prime is 1117340281. The reversal of 1117340261 is 1620437111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1620437111 = 8093 ⋅200227.

It can be written as a sum of positive squares in 2 ways, for example, as 671328100 + 446012161 = 25910^2 + 21119^2 .

It is a cyclic number.

It is not a de Polignac number, because 1117340261 - 2⁶ = 1117340197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1117340261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117340221) 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, 284696 + ... + 288593.

It is an arithmetic number, because the mean of its divisors is an integer number (279478875).

Almost surely, 2^1117340261 is an apocalyptic number.

It is an amenable number.

1117340261 is a deficient number, since it is larger than the sum of its proper divisors (575239).

1117340261 is an equidigital number, since it uses as much as digits as its factorization.

1117340261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575238.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1117340261 is about 33426.6399896849. The cubic root of 1117340261 is about 1037.6761045430.

Adding to 1117340261 its reverse (1620437111), we get a palindrome (2737777372).

The spelling of 1117340261 in words is "one billion, one hundred seventeen million, three hundred forty thousand, two hundred sixty-one".