117323261 has 4 divisors (see below), whose sum is σ = 127989024. Its totient is φ = 106657500.

The previous prime is 117323257. The next prime is 117323321. The reversal of 117323261 is 162323711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162323711 = 11 ⋅14756701.

It is a cyclic number.

It is not a de Polignac number, because 117323261 - 2² = 117323257 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 117323261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117323201) 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, 5332865 + ... + 5332886.

It is an arithmetic number, because the mean of its divisors is an integer number (31997256).

Almost surely, 2^117323261 is an apocalyptic number.

117323261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

117323261 is a deficient number, since it is larger than the sum of its proper divisors (10665763).

117323261 is a wasteful number, since it uses less digits than its factorization.

117323261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665762.

The product of its digits is 1512, while the sum is 26.

The square root of 117323261 is about 10831.5862642551. The cubic root of 117323261 is about 489.5473551413.

Adding to 117323261 its reverse (162323711), we get a palindrome (279646972).

The spelling of 117323261 in words is "one hundred seventeen million, three hundred twenty-three thousand, two hundred sixty-one".