2311160861 has 4 divisors (see below), whose sum is σ = 2364908832. Its totient is φ = 2257412892.

The previous prime is 2311160849. The next prime is 2311160867. The reversal of 2311160861 is 1680611132.

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 2311160861 - 2¹⁸ = 2310898717 is a prime.

It is a super-2 number, since 2×2311160861² = 10682929050836522642, which contains 22 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 (2311160867) 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, 26873921 + ... + 26874006.

It is an arithmetic number, because the mean of its divisors is an integer number (591227208).

Almost surely, 2^2311160861 is an apocalyptic number.

It is an amenable number.

2311160861 is a deficient number, since it is larger than the sum of its proper divisors (53747971).

2311160861 is an equidigital number, since it uses as much as digits as its factorization.

2311160861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53747970.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 2311160861 is about 48074.5344335231. The cubic root of 2311160861 is about 1322.1378086043.

Adding to 2311160861 its reverse (1680611132), we get a palindrome (3991771993).

The spelling of 2311160861 in words is "two billion, three hundred eleven million, one hundred sixty thousand, eight hundred sixty-one".