100237213 has 4 divisors (see below), whose sum is σ = 101880508. Its totient is φ = 98593920.

The previous prime is 100237199. The next prime is 100237223. The reversal of 100237213 is 312732001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312732001 = 19 ⋅16459579.

It can be written as a sum of positive squares in 2 ways, for example, as 14915044 + 85322169 = 3862^2 + 9237^2 .

It is a cyclic number.

It is not a de Polignac number, because 100237213 - 2¹³ = 100229021 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 (100237223) 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, 821556 + ... + 821677.

It is an arithmetic number, because the mean of its divisors is an integer number (25470127).

Almost surely, 2^100237213 is an apocalyptic number.

It is an amenable number.

100237213 is a deficient number, since it is larger than the sum of its proper divisors (1643295).

100237213 is an equidigital number, since it uses as much as digits as its factorization.

100237213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643294.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 100237213 is about 10011.8536245792. The cubic root of 100237213 is about 464.5256086113.

Adding to 100237213 its reverse (312732001), we get a palindrome (412969214).

The spelling of 100237213 in words is "one hundred million, two hundred thirty-seven thousand, two hundred thirteen".