101311123 has 16 divisors (see below), whose sum is σ = 108309600. Its totient is φ = 94590720.

The previous prime is 101311087. The next prime is 101311151. The reversal of 101311123 is 321113101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101311123 is a prime.

It is a super-2 number, since 2×101311123² = 20527887287042258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101311153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164965 + ... + 165577.

It is an arithmetic number, because the mean of its divisors is an integer number (6769350).

Almost surely, 2^101311123 is an apocalyptic number.

101311123 is a deficient number, since it is larger than the sum of its proper divisors (6998477).

101311123 is a wasteful number, since it uses less digits than its factorization.

101311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 101311123 is about 10065.3426667948. The cubic root of 101311123 is about 466.1786463461.

Adding to 101311123 its reverse (321113101), we get a palindrome (422424224).

The spelling of 101311123 in words is "one hundred one million, three hundred eleven thousand, one hundred twenty-three".