131131011 has 32 divisors (see below), whose sum is σ = 198443520. Its totient is φ = 76294400.

The previous prime is 131131009. The next prime is 131131031. The reversal of 131131011 is 110131131.

It is a cyclic number.

It is not a de Polignac number, because 131131011 - 2¹ = 131131009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131131001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251431 + ... + 251951.

It is an arithmetic number, because the mean of its divisors is an integer number (6201360).

Almost surely, 2^131131011 is an apocalyptic number.

131131011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131131011 is a deficient number, since it is larger than the sum of its proper divisors (67312509).

131131011 is a wasteful number, since it uses less digits than its factorization.

131131011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 131131011 is about 11451.2449541524. The cubic root of 131131011 is about 508.0445573892.

Adding to 131131011 its reverse (110131131), we get a palindrome (241262142).

The spelling of 131131011 in words is "one hundred thirty-one million, one hundred thirty-one thousand, eleven".