213745100 has 18 divisors (see below), whose sum is σ = 463827084. Its totient is φ = 85498000.

The previous prime is 213745099. The next prime is 213745121. The reversal of 213745100 is 1547312.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1068626 + ... + 1068825.

Almost surely, 2^213745100 is an apocalyptic number.

213745100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213745100 is an abundant number, since it is smaller than the sum of its proper divisors (250081984).

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

213745100 is a wasteful number, since it uses less digits than its factorization.

213745100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137465 (or 2137458 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 213745100 is about 14620.0239397889. The cubic root of 213745100 is about 597.9048218600.

The spelling of 213745100 in words is "two hundred thirteen million, seven hundred forty-five thousand, one hundred".