11313123111 has 6 divisors (see below), whose sum is σ = 16341177840. Its totient is φ = 7542082068.

The previous prime is 11313123103. The next prime is 11313123119. The reversal of 11313123111 is 11132131311.

11313123111 is a `hidden beast` number, since 11 + 31 + 312 + 311 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (11313123103) and next prime (11313123119).

It is not a de Polignac number, because 11313123111 - 2³ = 11313123103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11313123119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 628506831 + ... + 628506848.

It is an arithmetic number, because the mean of its divisors is an integer number (2723529640).

Almost surely, 2^11313123111 is an apocalyptic number.

11313123111 is a deficient number, since it is larger than the sum of its proper divisors (5028054729).

11313123111 is a wasteful number, since it uses less digits than its factorization.

11313123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257013685 (or 1257013682 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

Adding to 11313123111 its reverse (11132131311), we get a palindrome (22445254422).

The spelling of 11313123111 in words is "eleven billion, three hundred thirteen million, one hundred twenty-three thousand, one hundred eleven".