131511852 has 36 divisors (see below), whose sum is σ = 337888096. Its totient is φ = 43117920.

The previous prime is 131511851. The next prime is 131511871. The reversal of 131511852 is 258115131.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (131511851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27748 + ... + 32139.

Almost surely, 2^131511852 is an apocalyptic number.

131511852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131511852 is an abundant number, since it is smaller than the sum of its proper divisors (206376244).

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

131511852 is a wasteful number, since it uses less digits than its factorization.

131511852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59958 (or 59953 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 131511852 is about 11467.8617012938. The cubic root of 131511852 is about 508.5359163407.

Adding to 131511852 its reverse (258115131), we get a palindrome (389626983).

The spelling of 131511852 in words is "one hundred thirty-one million, five hundred eleven thousand, eight hundred fifty-two".