131011031 has 8 divisors (see below), whose sum is σ = 134374464. Its totient is φ = 127655680.

The previous prime is 131011021. The next prime is 131011033. The reversal of 131011031 is 130110131.

It is a happy number.

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 131011031 - 2²² = 126816727 is a prime.

It is a super-2 number, since 2×131011031² = 34327780487365922, 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 (131011033) 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, 43775 + ... + 46671.

It is an arithmetic number, because the mean of its divisors is an integer number (16796808).

Almost surely, 2^131011031 is an apocalyptic number.

131011031 is a deficient number, since it is larger than the sum of its proper divisors (3363433).

131011031 is a wasteful number, since it uses less digits than its factorization.

131011031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 131011031 is about 11446.0050235879. The cubic root of 131011031 is about 507.8895628140.

Adding to 131011031 its reverse (130110131), we get a palindrome (261121162).

The spelling of 131011031 in words is "one hundred thirty-one million, eleven thousand, thirty-one".