215213043 has 4 divisors (see below), whose sum is σ = 286950728. Its totient is φ = 143475360.

The previous prime is 215213023. The next prime is 215213051. The reversal of 215213043 is 340312512.

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

It is not a de Polignac number, because 215213043 - 2⁸ = 215212787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215213023) 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, 35868838 + ... + 35868843.

It is an arithmetic number, because the mean of its divisors is an integer number (71737682).

Almost surely, 2^215213043 is an apocalyptic number.

215213043 is a deficient number, since it is larger than the sum of its proper divisors (71737685).

215213043 is an equidigital number, since it uses as much as digits as its factorization.

215213043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71737684.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 215213043 is about 14670.1412058644. The cubic root of 215213043 is about 599.2704493972.

Adding to 215213043 its reverse (340312512), we get a palindrome (555525555).

The spelling of 215213043 in words is "two hundred fifteen million, two hundred thirteen thousand, forty-three".