123311201366 has 8 divisors (see below), whose sum is σ = 184978094904. Its totient is φ = 61651836400.

The previous prime is 123311201353. The next prime is 123311201371. The reversal of 123311201366 is 663102113321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841015 + ... + 1906818.

It is an arithmetic number, because the mean of its divisors is an integer number (23122261863).

Almost surely, 2^123311201366 is an apocalyptic number.

123311201366 is a deficient number, since it is larger than the sum of its proper divisors (61666893538).

123311201366 is a wasteful number, since it uses less digits than its factorization.

123311201366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764286.

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 123311201366 its reverse (663102113321), we get a palindrome (786413314687).

The spelling of 123311201366 in words is "one hundred twenty-three billion, three hundred eleven million, two hundred one thousand, three hundred sixty-six".