131023530 has 48 divisors (see below), whose sum is σ = 371633184. Its totient is φ = 31763040.

The previous prime is 131023523. The next prime is 131023553. The reversal of 131023530 is 35320131.

131023530 is a `hidden beast` number, since 1 + 310 + 2 + 353 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65184 + ... + 67163.

It is an arithmetic number, because the mean of its divisors is an integer number (7742358).

Almost surely, 2^131023530 is an apocalyptic number.

131023530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131023530 is an abundant number, since it is smaller than the sum of its proper divisors (240609654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131023530 is a wasteful number, since it uses less digits than its factorization.

131023530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132371 (or 132368 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 131023530 is about 11446.5510089284. The cubic root of 131023530 is about 507.9057138961.

Adding to 131023530 its reverse (35320131), we get a palindrome (166343661).

The spelling of 131023530 in words is "one hundred thirty-one million, twenty-three thousand, five hundred thirty".