12311161406 has 4 divisors (see below), whose sum is σ = 18466742112. Its totient is φ = 6155580702.

The previous prime is 12311161399. The next prime is 12311161451. The reversal of 12311161406 is 60416111321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3077790350 + ... + 3077790353.

It is an arithmetic number, because the mean of its divisors is an integer number (4616685528).

Almost surely, 2^12311161406 is an apocalyptic number.

12311161406 is a deficient number, since it is larger than the sum of its proper divisors (6155580706).

12311161406 is an equidigital number, since it uses as much as digits as its factorization.

12311161406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155580705.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 12311161406 its reverse (60416111321), we get a palindrome (72727272727).

The spelling of 12311161406 in words is "twelve billion, three hundred eleven million, one hundred sixty-one thousand, four hundred six".