131345552 has 20 divisors (see below), whose sum is σ = 274057980. Its totient is φ = 60620928.

The previous prime is 131345549. The next prime is 131345561. The reversal of 131345552 is 255543131.

It can be written as a sum of positive squares in 2 ways, for example, as 73342096 + 58003456 = 8564^2 + 7616^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315527 + ... + 315942.

It is an arithmetic number, because the mean of its divisors is an integer number (13702899).

Almost surely, 2^131345552 is an apocalyptic number.

It is an amenable number.

131345552 is an abundant number, since it is smaller than the sum of its proper divisors (142712428).

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

131345552 is a wasteful number, since it uses less digits than its factorization.

131345552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631490 (or 631484 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 131345552 is about 11460.6087098374. The cubic root of 131345552 is about 508.3214738312.

Adding to 131345552 its reverse (255543131), we get a palindrome (386888683).

The spelling of 131345552 in words is "one hundred thirty-one million, three hundred forty-five thousand, five hundred fifty-two".