131020524 has 24 divisors (see below), whose sum is σ = 339683120. Its totient is φ = 43673472.

The previous prime is 131020501. The next prime is 131020531. The reversal of 131020524 is 425020131.

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

It is a junction number, because it is equal to n+sod(n) for n = 131020497 and 131020506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606469 + ... + 606684.

Almost surely, 2^131020524 is an apocalyptic number.

It is an amenable number.

131020524 is an abundant number, since it is smaller than the sum of its proper divisors (208662596).

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

131020524 is a wasteful number, since it uses less digits than its factorization.

131020524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213166 (or 1213158 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 131020524 is about 11446.4197022475. The cubic root of 131020524 is about 507.9018296670.

Adding to 131020524 its reverse (425020131), we get a palindrome (556040655).

The spelling of 131020524 in words is "one hundred thirty-one million, twenty thousand, five hundred twenty-four".