131101123 has 4 divisors (see below), whose sum is σ = 131936320. Its totient is φ = 130265928.

The previous prime is 131101079. The next prime is 131101133. The reversal of 131101123 is 321101131.

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

It is a cyclic number.

It is not a de Polignac number, because 131101123 - 2¹³ = 131092931 is a prime.

It is a super-2 number, since 2×131101123² = 34375008903722258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131101133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417363 + ... + 417676.

It is an arithmetic number, because the mean of its divisors is an integer number (32984080).

Almost surely, 2^131101123 is an apocalyptic number.

131101123 is a deficient number, since it is larger than the sum of its proper divisors (835197).

131101123 is an equidigital number, since it uses as much as digits as its factorization.

131101123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835196.

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

The square root of 131101123 is about 11449.9398688377. The cubic root of 131101123 is about 508.0059558171.

Adding to 131101123 its reverse (321101131), we get a palindrome (452202254).

The spelling of 131101123 in words is "one hundred thirty-one million, one hundred one thousand, one hundred twenty-three".