131011431202121 has 8 divisors (see below), whose sum is σ = 131059448991744. Its totient is φ = 130963420977120.

The previous prime is 131011431202111. The next prime is 131011431202133. The reversal of 131011431202121 is 121202134110131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131011431202121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131011431202111) 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, 32870096 + ... + 36639678.

It is an arithmetic number, because the mean of its divisors is an integer number (16382431123968).

Almost surely, 2^{131011431202121} is an apocalyptic number.

It is an amenable number.

131011431202121 is a deficient number, since it is larger than the sum of its proper divisors (48017789623).

131011431202121 is an equidigital number, since it uses as much as digits as its factorization.

131011431202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3782311.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 131011431202121 its reverse (121202134110131), we get a palindrome (252213565312252).

The spelling of 131011431202121 in words is "one hundred thirty-one trillion, eleven billion, four hundred thirty-one million, two hundred two thousand, one hundred twenty-one".