213501051 has 12 divisors (see below), whose sum is σ = 309740080. Its totient is φ = 141711120.

The previous prime is 213501007. The next prime is 213501053. The reversal of 213501051 is 150105312.

It is not a de Polignac number, because 213501051 - 2⁷ = 213500923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213501053) 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, 49735 + ... + 53856.

Almost surely, 2^213501051 is an apocalyptic number.

213501051 is a deficient number, since it is larger than the sum of its proper divisors (96239029).

213501051 is a wasteful number, since it uses less digits than its factorization.

213501051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103826 (or 103823 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 213501051 is about 14611.6751606378. The cubic root of 213501051 is about 597.6771774300.

Adding to 213501051 its reverse (150105312), we get a palindrome (363606363).

It can be divided in two parts, 213 and 501051, that added together give a square (501264 = 708²).

The spelling of 213501051 in words is "two hundred thirteen million, five hundred one thousand, fifty-one".