213051001 has 4 divisors (see below), whose sum is σ = 222314112. Its totient is φ = 203787892.

The previous prime is 213050993. The next prime is 213051019. The reversal of 213051001 is 100150312.

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 213051001 - 2³ = 213050993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213051031) 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, 4631521 + ... + 4631566.

It is an arithmetic number, because the mean of its divisors is an integer number (55578528).

Almost surely, 2^213051001 is an apocalyptic number.

It is an amenable number.

213051001 is a deficient number, since it is larger than the sum of its proper divisors (9263111).

213051001 is an equidigital number, since it uses as much as digits as its factorization.

213051001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263110.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 213051001 is about 14596.2666802166. The cubic root of 213051001 is about 597.2569237024.

The spelling of 213051001 in words is "two hundred thirteen million, fifty-one thousand, one".