213407983 has 4 divisors (see below), whose sum is σ = 213965568. Its totient is φ = 212850400.

The previous prime is 213407977. The next prime is 213407989. The reversal of 213407983 is 389704312.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (213407977) and next prime (213407989).

It is a cyclic number.

It is not a de Polignac number, because 213407983 - 2⁹ = 213407471 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 (213407989) 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, 278218 + ... + 278983.

It is an arithmetic number, because the mean of its divisors is an integer number (53491392).

Almost surely, 2^213407983 is an apocalyptic number.

213407983 is a deficient number, since it is larger than the sum of its proper divisors (557585).

213407983 is an equidigital number, since it uses as much as digits as its factorization.

213407983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557584.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 213407983 is about 14608.4900999385. The cubic root of 213407983 is about 597.5903196155.

The spelling of 213407983 in words is "two hundred thirteen million, four hundred seven thousand, nine hundred eighty-three".