213136375 has 16 divisors (see below), whose sum is σ = 267287904. Its totient is φ = 169680000.

The previous prime is 213136367. The next prime is 213136381. The reversal of 213136375 is 573631312.

It is not a de Polignac number, because 213136375 - 2³ = 213136367 is a prime.

It is a super-2 number, since 2×213136375² = 90854228696281250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22335 + ... + 30415.

It is an arithmetic number, because the mean of its divisors is an integer number (16705494).

Almost surely, 2^213136375 is an apocalyptic number.

213136375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

213136375 is a deficient number, since it is larger than the sum of its proper divisors (54151529).

213136375 is an equidigital number, since it uses as much as digits as its factorization.

213136375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8307 (or 8297 counting only the distinct ones).

The product of its digits is 11340, while the sum is 31.

The square root of 213136375 is about 14599.1909022384. The cubic root of 213136375 is about 597.3366908363.

Adding to 213136375 its reverse (573631312), we get a palindrome (786767687).

The spelling of 213136375 in words is "two hundred thirteen million, one hundred thirty-six thousand, three hundred seventy-five".