2131023011213 has 4 divisors (see below), whose sum is σ = 2131069680480. Its totient is φ = 2130976341948.

The previous prime is 2131023011191. The next prime is 2131023011233. The reversal of 2131023011213 is 3121103201312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2131023011213 - 2⁸ = 2131023010957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131023011233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23266073 + ... + 23357486.

It is an arithmetic number, because the mean of its divisors is an integer number (532767420120).

Almost surely, 2^{2131023011213} is an apocalyptic number.

It is an amenable number.

2131023011213 is a deficient number, since it is larger than the sum of its proper divisors (46669267).

2131023011213 is an equidigital number, since it uses as much as digits as its factorization.

2131023011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46669266.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2131023011213 its reverse (3121103201312), we get a palindrome (5252126212525).

The spelling of 2131023011213 in words is "two trillion, one hundred thirty-one billion, twenty-three million, eleven thousand, two hundred thirteen".