213103998 has 24 divisors (see below), whose sum is σ = 462662928. Its totient is φ = 70890432.

The previous prime is 213103997. The next prime is 213103999. The reversal of 213103998 is 899301312.

It is an interprime number because it is at equal distance from previous prime (213103997) and next prime (213103999).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213103997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2715 + ... + 20822.

It is an arithmetic number, because the mean of its divisors is an integer number (19277622).

Almost surely, 2^213103998 is an apocalyptic number.

213103998 is an abundant number, since it is smaller than the sum of its proper divisors (249558930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213103998 is a wasteful number, since it uses less digits than its factorization.

213103998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24048 (or 24045 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 213103998 is about 14598.0819973036. The cubic root of 213103998 is about 597.3064426764.

The spelling of 213103998 in words is "two hundred thirteen million, one hundred three thousand, nine hundred ninety-eight".