131031011 has 8 divisors (see below), whose sum is σ = 138086400. Its totient is φ = 123991560.

The previous prime is 131031007. The next prime is 131031013. The reversal of 131031011 is 110130131.

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 131031011 - 2² = 131031007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131030983 and 131031001.

It is not an unprimeable number, because it can be changed into a prime (131031013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15350 + ... + 22308.

It is an arithmetic number, because the mean of its divisors is an integer number (17260800).

Almost surely, 2^131031011 is an apocalyptic number.

131031011 is a deficient number, since it is larger than the sum of its proper divisors (7055389).

131031011 is an equidigital number, since it uses as much as digits as its factorization.

131031011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7969.

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

The square root of 131031011 is about 11446.8777839199. The cubic root of 131031011 is about 507.9153802778.

Adding to 131031011 its reverse (110130131), we get a palindrome (241161142).

The spelling of 131031011 in words is "one hundred thirty-one million, thirty-one thousand, eleven".