131105252 has 12 divisors (see below), whose sum is σ = 233763516. Its totient is φ = 64315680.

The previous prime is 131105243. The next prime is 131105269. The reversal of 131105252 is 252501131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 118897216 + 12208036 = 10904^2 + 3494^2 .

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, 308999 + ... + 309422.

It is an arithmetic number, because the mean of its divisors is an integer number (19480293).

Almost surely, 2^131105252 is an apocalyptic number.

It is an amenable number.

131105252 is a deficient number, since it is larger than the sum of its proper divisors (102658264).

131105252 is a wasteful number, since it uses less digits than its factorization.

131105252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618478 (or 618476 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 131105252 is about 11450.1201740418. The cubic root of 131105252 is about 508.0112889384.

Adding to 131105252 its reverse (252501131), we get a palindrome (383606383).

The spelling of 131105252 in words is "one hundred thirty-one million, one hundred five thousand, two hundred fifty-two".