131009901 has 8 divisors (see below), whose sum is σ = 190559904. Its totient is φ = 79399920.

The previous prime is 131009899. The next prime is 131009911. The reversal of 131009901 is 109900131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131009901 - 2¹ = 131009899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131009911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1984966 + ... + 1985031.

It is an arithmetic number, because the mean of its divisors is an integer number (23819988).

Almost surely, 2^131009901 is an apocalyptic number.

131009901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131009901 is a deficient number, since it is larger than the sum of its proper divisors (59550003).

131009901 is a wasteful number, since it uses less digits than its factorization.

131009901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970011.

The product of its (nonzero) digits is 243, while the sum is 24.

The square root of 131009901 is about 11445.9556612805. The cubic root of 131009901 is about 507.8881025887. Note that the first 3 decimals are identical.

The spelling of 131009901 in words is "one hundred thirty-one million, nine thousand, nine hundred one".