131751081 has 48 divisors (see below), whose sum is σ = 243105408. Its totient is φ = 66758400.

The previous prime is 131751077. The next prime is 131751083. The reversal of 131751081 is 180157131.

It is not a de Polignac number, because 131751081 - 2² = 131751077 is a prime.

It is a super-2 number, since 2×131751081² = 34716694689337122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131751083) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26095 + ... + 30731.

It is an arithmetic number, because the mean of its divisors is an integer number (5064696).

Almost surely, 2^131751081 is an apocalyptic number.

131751081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131751081 is a deficient number, since it is larger than the sum of its proper divisors (111354327).

131751081 is a wasteful number, since it uses less digits than its factorization.

131751081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702 (or 4699 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

The square root of 131751081 is about 11478.2873722520. The cubic root of 131751081 is about 508.8440833593.

The spelling of 131751081 in words is "one hundred thirty-one million, seven hundred fifty-one thousand, eighty-one".