131001181 has 16 divisors (see below), whose sum is σ = 141422400. Its totient is φ = 120970368.

The previous prime is 131001163. The next prime is 131001193. The reversal of 131001181 is 181100131.

It is a cyclic number.

It is not a de Polignac number, because 131001181 - 2¹⁵ = 130968413 is a prime.

It is a super-2 number, since 2×131001181² = 34322618846789522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131001131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153151 + ... + 154003.

It is an arithmetic number, because the mean of its divisors is an integer number (8838900).

Almost surely, 2^131001181 is an apocalyptic number.

It is an amenable number.

131001181 is a deficient number, since it is larger than the sum of its proper divisors (10421219).

131001181 is a wasteful number, since it uses less digits than its factorization.

131001181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068.

The product of its (nonzero) digits is 24, while the sum is 16.

The square root of 131001181 is about 11445.5747343679. The cubic root of 131001181 is about 507.8768340192.

The spelling of 131001181 in words is "one hundred thirty-one million, one thousand, one hundred eighty-one".