131133123 has 12 divisors (see below), whose sum is σ = 206634168. Its totient is φ = 79474560.

The previous prime is 131133113. The next prime is 131133179. The reversal of 131133123 is 321331131.

It is a happy number.

131133123 is a `hidden beast` number, since 1 + 311 + 331 + 23 = 666.

It is not a de Polignac number, because 131133123 - 2⁵ = 131133091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131133096 and 131133105.

It is not an unprimeable number, because it can be changed into a prime (131133113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 662190 + ... + 662387.

It is an arithmetic number, because the mean of its divisors is an integer number (17219514).

Almost surely, 2^131133123 is an apocalyptic number.

131133123 is a deficient number, since it is larger than the sum of its proper divisors (75501045).

131133123 is a wasteful number, since it uses less digits than its factorization.

131133123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324594 (or 1324591 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 131133123 is about 11451.3371708286. The cubic root of 131133123 is about 508.0472849015.

Adding to 131133123 its reverse (321331131), we get a palindrome (452464254).

The spelling of 131133123 in words is "one hundred thirty-one million, one hundred thirty-three thousand, one hundred twenty-three".