131840812 has 6 divisors (see below), whose sum is σ = 230721428. Its totient is φ = 65920404.

The previous prime is 131840801. The next prime is 131840833. The reversal of 131840812 is 218048131.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16480098 + ... + 16480105.

Almost surely, 2^131840812 is an apocalyptic number.

It is an amenable number.

131840812 is a deficient number, since it is larger than the sum of its proper divisors (98880616).

131840812 is a wasteful number, since it uses less digits than its factorization.

131840812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32960207 (or 32960205 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 131840812 is about 11482.1954346719. The cubic root of 131840812 is about 508.9595757115.

Adding to 131840812 its reverse (218048131), we get a palindrome (349888943).

The spelling of 131840812 in words is "one hundred thirty-one million, eight hundred forty thousand, eight hundred twelve".