123111001310 has 32 divisors (see below), whose sum is σ = 241760166912. Its totient is φ = 44764872480.

The previous prime is 123111001291. The next prime is 123111001331. The reversal of 123111001310 is 13100111321.

It is a happy number.

It is a super-2 number, since 2×123111001310² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2827727 + ... + 2870933.

It is an arithmetic number, because the mean of its divisors is an integer number (7555005216).

Almost surely, 2^123111001310 is an apocalyptic number.

123111001310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123111001310 is a deficient number, since it is larger than the sum of its proper divisors (118649165602).

123111001310 is a wasteful number, since it uses less digits than its factorization.

123111001310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69128.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 123111001310 its reverse (13100111321), we get a palindrome (136211112631).

The spelling of 123111001310 in words is "one hundred twenty-three billion, one hundred eleven million, one thousand, three hundred ten".