131730552 has 96 divisors (see below), whose sum is σ = 380090880. Its totient is φ = 41072640.

The previous prime is 131730527. The next prime is 131730583. The reversal of 131730552 is 255037131.

It is a congruent number.

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, 343753 + ... + 344135.

It is an arithmetic number, because the mean of its divisors is an integer number (3959280).

Almost surely, 2^131730552 is an apocalyptic number.

131730552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131730552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190045440).

131730552 is an abundant number, since it is smaller than the sum of its proper divisors (248360328).

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

131730552 is a wasteful number, since it uses less digits than its factorization.

131730552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 131730552 is about 11477.3930837974. The cubic root of 131730552 is about 508.8176532086.

Adding to 131730552 its reverse (255037131), we get a palindrome (386767683).

The spelling of 131730552 in words is "one hundred thirty-one million, seven hundred thirty thousand, five hundred fifty-two".