213481078 has 16 divisors (see below), whose sum is σ = 337217760. Its totient is φ = 101160576.

The previous prime is 213481067. The next prime is 213481117. The reversal of 213481078 is 870184312.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 16275 + ... + 26302.

It is an arithmetic number, because the mean of its divisors is an integer number (21076110).

Almost surely, 2^213481078 is an apocalyptic number.

213481078 is a deficient number, since it is larger than the sum of its proper divisors (123736682).

213481078 is a wasteful number, since it uses less digits than its factorization.

213481078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42711.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 213481078 is about 14610.9916843450. The cubic root of 213481078 is about 597.6585393039.

The spelling of 213481078 in words is "two hundred thirteen million, four hundred eighty-one thousand, seventy-eight".