100031223213 has 10 divisors (see below), whose sum is σ = 149429358254. Its totient is φ = 66687482088.

The previous prime is 100031223203. The next prime is 100031223223. The reversal of 100031223213 is 312322130001.

It is an interprime number because it is at equal distance from previous prime (100031223203) and next prime (100031223223).

It can be written as a sum of positive squares in only one way, i.e., 95201251209 + 4829972004 = 308547^2 + 69498^2 .

It is not a de Polignac number, because 100031223213 - 2⁸ = 100031222957 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 (100031223203) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 617476606 + ... + 617476767.

Almost surely, 2^100031223213 is an apocalyptic number.

It is an amenable number.

100031223213 is a deficient number, since it is larger than the sum of its proper divisors (49398135041).

100031223213 is an equidigital number, since it uses as much as digits as its factorization.

100031223213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234953385 (or 1234953376 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 100031223213 its reverse (312322130001), we get a palindrome (412353353214).

The spelling of 100031223213 in words is "one hundred billion, thirty-one million, two hundred twenty-three thousand, two hundred thirteen".