131551012 has 12 divisors (see below), whose sum is σ = 232588300. Its totient is φ = 65097216.

The previous prime is 131551009. The next prime is 131551019. The reversal of 131551012 is 210155131.

It can be written as a sum of positive squares in 2 ways, for example, as 29419776 + 102131236 = 5424^2 + 10106^2 .

It is not an unprimeable number, because it can be changed into a prime (131551019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169137 + ... + 169912.

Almost surely, 2^131551012 is an apocalyptic number.

It is an amenable number.

131551012 is a deficient number, since it is larger than the sum of its proper divisors (101037288).

131551012 is a wasteful number, since it uses less digits than its factorization.

131551012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339150 (or 339148 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 131551012 is about 11469.5689544115. The cubic root of 131551012 is about 508.5863865452.

The spelling of 131551012 in words is "one hundred thirty-one million, five hundred fifty-one thousand, twelve".