131120523 has 12 divisors (see below), whose sum is σ = 191272848. Its totient is φ = 86547600.

The previous prime is 131120519. The next prime is 131120557. The reversal of 131120523 is 325021131.

131120523 is a `hidden beast` number, since 131 + 12 + 0 + 523 = 666.

It is not a de Polignac number, because 131120523 - 2² = 131120519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131120496 and 131120505.

It is not an unprimeable number, because it can be changed into a prime (131120573) 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, 71215 + ... + 73032.

It is an arithmetic number, because the mean of its divisors is an integer number (15939404).

Almost surely, 2^131120523 is an apocalyptic number.

131120523 is a deficient number, since it is larger than the sum of its proper divisors (60152325).

131120523 is a wasteful number, since it uses less digits than its factorization.

131120523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144354 (or 144351 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 131120523 is about 11450.7870035208. The cubic root of 131120523 is about 508.0310123771.

Adding to 131120523 its reverse (325021131), we get a palindrome (456141654).

The spelling of 131120523 in words is "one hundred thirty-one million, one hundred twenty thousand, five hundred twenty-three".