131951 has 4 divisors (see below), whose sum is σ = 137712. Its totient is φ = 126192.

The previous prime is 131947. The next prime is 131959. The reversal of 131951 is 159131.

131951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131951 - 2² = 131947 is a prime.

It is a super-2 number, since 2×131951² = 34822132802, 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 (131959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2846 + ... + 2891.

It is an arithmetic number, because the mean of its divisors is an integer number (34428).

2¹³¹⁹⁵¹ is an apocalyptic number.

131951 is a deficient number, since it is larger than the sum of its proper divisors (5761).

131951 is an equidigital number, since it uses as much as digits as its factorization.

131951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760.

The product of its digits is 135, while the sum is 20.

The square root of 131951 is about 363.2506022018. The cubic root of 131951 is about 50.9101326511.

The spelling of 131951 in words is "one hundred thirty-one thousand, nine hundred fifty-one".