131333528 has 32 divisors (see below), whose sum is σ = 254016000. Its totient is φ = 63628320.

The previous prime is 131333513. The next prime is 131333563. The reversal of 131333528 is 825333131.

It is a self number, because there is not a number n which added to its sum of digits gives 131333528.

It is a congruent number.

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, 31553 + ... + 35471.

It is an arithmetic number, because the mean of its divisors is an integer number (7938000).

Almost surely, 2^131333528 is an apocalyptic number.

It is an amenable number.

131333528 is a deficient number, since it is larger than the sum of its proper divisors (122682472).

131333528 is a wasteful number, since it uses less digits than its factorization.

131333528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055 (or 4051 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 131333528 is about 11460.0841183649. The cubic root of 131333528 is about 508.3059619649.

Adding to 131333528 its reverse (825333131), we get a palindrome (956666659).

It can be divided in two parts, 13133 and 3528, that added together give a palindrome (16661).

The spelling of 131333528 in words is "one hundred thirty-one million, three hundred thirty-three thousand, five hundred twenty-eight".