131245252 has 6 divisors (see below), whose sum is σ = 229679198. Its totient is φ = 65622624.

The previous prime is 131245241. The next prime is 131245259. The reversal of 131245252 is 252542131.

It can be written as a sum of positive squares in only one way, i.e., 80892036 + 50353216 = 8994^2 + 7096^2 .

It is not an unprimeable number, because it can be changed into a prime (131245259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16405653 + ... + 16405660.

Almost surely, 2^131245252 is an apocalyptic number.

It is an amenable number.

131245252 is a deficient number, since it is larger than the sum of its proper divisors (98433946).

131245252 is a wasteful number, since it uses less digits than its factorization.

131245252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32811317 (or 32811315 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 131245252 is about 11456.2320158069. The cubic root of 131245252 is about 508.1920502702.

Adding to 131245252 its reverse (252542131), we get a palindrome (383787383).

It can be divided in two parts, 1312 and 45252, that added together give a palindrome (46564).

The spelling of 131245252 in words is "one hundred thirty-one million, two hundred forty-five thousand, two hundred fifty-two".