131021011 has 8 divisors (see below), whose sum is σ = 143028144. Its totient is φ = 119029920.

The previous prime is 131020997. The next prime is 131021021. The reversal of 131021011 is 110120131.

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 131021011 - 2¹¹ = 131018963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131021021) 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, 18685 + ... + 24721.

It is an arithmetic number, because the mean of its divisors is an integer number (17878518).

Almost surely, 2^131021011 is an apocalyptic number.

131021011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131021011 is a deficient number, since it is larger than the sum of its proper divisors (12007133).

131021011 is a wasteful number, since it uses less digits than its factorization.

131021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8021.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 131021011 is about 11446.4409752551. The cubic root of 131021011 is about 507.9024589523.

Adding to 131021011 its reverse (110120131), we get a palindrome (241141142).

The spelling of 131021011 in words is "one hundred thirty-one million, twenty-one thousand, eleven".