103987213 has 4 divisors (see below), whose sum is σ = 113440608. Its totient is φ = 94533820.

The previous prime is 103987211. The next prime is 103987217. The reversal of 103987213 is 312789301.

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 103987213 - 2¹ = 103987211 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 (103987211) 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, 4726681 + ... + 4726702.

It is an arithmetic number, because the mean of its divisors is an integer number (28360152).

Almost surely, 2^103987213 is an apocalyptic number.

It is an amenable number.

103987213 is a deficient number, since it is larger than the sum of its proper divisors (9453395).

103987213 is an equidigital number, since it uses as much as digits as its factorization.

103987213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9453394.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 103987213 is about 10197.4120736587. The cubic root of 103987213 is about 470.2476633461.

The spelling of 103987213 in words is "one hundred three million, nine hundred eighty-seven thousand, two hundred thirteen".