100131232213 has 4 divisors (see below), whose sum is σ = 100228165708. Its totient is φ = 100034298720.

The previous prime is 100131232189. The next prime is 100131232241. The reversal of 100131232213 is 312232131001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96343814449 + 3787417764 = 310393^2 + 61542^2 .

It is a cyclic number.

It is not a de Polignac number, because 100131232213 - 2¹³ = 100131224021 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 (100131232273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48465198 + ... + 48467263.

It is an arithmetic number, because the mean of its divisors is an integer number (25057041427).

Almost surely, 2^100131232213 is an apocalyptic number.

It is an amenable number.

100131232213 is a deficient number, since it is larger than the sum of its proper divisors (96933495).

100131232213 is an equidigital number, since it uses as much as digits as its factorization.

100131232213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96933494.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 100131232213 its reverse (312232131001), we get a palindrome (412363363214).

The spelling of 100131232213 in words is "one hundred billion, one hundred thirty-one million, two hundred thirty-two thousand, two hundred thirteen".