131145012 has 36 divisors (see below), whose sum is σ = 339218880. Its totient is φ = 42697872.

The previous prime is 131144963. The next prime is 131145029. The reversal of 131145012 is 210541131.

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

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40812 + ... + 43907.

Almost surely, 2^131145012 is an apocalyptic number.

131145012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131145012 is an abundant number, since it is smaller than the sum of its proper divisors (208073868).

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

131145012 is a wasteful number, since it uses less digits than its factorization.

131145012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84772 (or 84767 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 131145012 is about 11451.8562687453. The cubic root of 131145012 is about 508.0626382348.

Adding to 131145012 its reverse (210541131), we get a palindrome (341686143).

The spelling of 131145012 in words is "one hundred thirty-one million, one hundred forty-five thousand, twelve".