131323031 has 8 divisors (see below), whose sum is σ = 156609024. Its totient is φ = 107668440.

The previous prime is 131323013. The next prime is 131323051. The reversal of 131323031 is 130323131.

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

It is a cyclic number.

It is not a de Polignac number, because 131323031 - 2¹⁰ = 131322007 is a prime.

It is a super-2 number, since 2×131323031² = 34491476942053922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131323051) 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, 407675 + ... + 407996.

It is an arithmetic number, because the mean of its divisors is an integer number (19576128).

Almost surely, 2^131323031 is an apocalyptic number.

131323031 is a deficient number, since it is larger than the sum of its proper divisors (25285993).

131323031 is an equidigital number, since it uses as much as digits as its factorization.

131323031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815701.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 131323031 is about 11459.6261282818. The cubic root of 131323031 is about 508.2924192697.

Adding to 131323031 its reverse (130323131), we get a palindrome (261646162).

The spelling of 131323031 in words is "one hundred thirty-one million, three hundred twenty-three thousand, thirty-one".