131021011331 has 8 divisors (see below), whose sum is σ = 151137722880. Its totient is φ = 111254155848.

The previous prime is 131021011327. The next prime is 131021011337. The reversal of 131021011331 is 133110120131.

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 131021011331 - 2² = 131021011327 is a prime.

It is a super-3 number, since 3×131021011331³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131021011337) 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, 87463211 + ... + 87464708.

It is an arithmetic number, because the mean of its divisors is an integer number (18892215360).

Almost surely, 2^131021011331 is an apocalyptic number.

131021011331 is a deficient number, since it is larger than the sum of its proper divisors (20116711549).

131021011331 is a wasteful number, since it uses less digits than its factorization.

131021011331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174928033.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 131021011331 its reverse (133110120131), we get a palindrome (264131131462).

The spelling of 131021011331 in words is "one hundred thirty-one billion, twenty-one million, eleven thousand, three hundred thirty-one".