161140713 has 4 divisors (see below), whose sum is σ = 214854288. Its totient is φ = 107427140.

The previous prime is 161140709. The next prime is 161140751. The reversal of 161140713 is 317041161.

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.

It is a cyclic number.

It is not a de Polignac number, because 161140713 - 2² = 161140709 is a prime.

It is a super-2 number, since 2×161140713² = 51932658772296738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161140613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26856783 + ... + 26856788.

It is an arithmetic number, because the mean of its divisors is an integer number (53713572).

Almost surely, 2^161140713 is an apocalyptic number.

It is an amenable number.

161140713 is a deficient number, since it is larger than the sum of its proper divisors (53713575).

161140713 is an equidigital number, since it uses as much as digits as its factorization.

161140713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53713574.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 161140713 is about 12694.1211984131. The cubic root of 161140713 is about 544.1706241476.

Adding to 161140713 its reverse (317041161), we get a palindrome (478181874).

It can be divided in two parts, 1611 and 40713, that added together give a palindrome (42324).

The spelling of 161140713 in words is "one hundred sixty-one million, one hundred forty thousand, seven hundred thirteen".