213481079 has 4 divisors (see below), whose sum is σ = 243978384. Its totient is φ = 182983776.

The previous prime is 213481067. The next prime is 213481117. The reversal of 213481079 is 970184312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213481079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213421079) 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, 15248642 + ... + 15248655.

It is an arithmetic number, because the mean of its divisors is an integer number (60994596).

Almost surely, 2^213481079 is an apocalyptic number.

213481079 is a deficient number, since it is larger than the sum of its proper divisors (30497305).

213481079 is an equidigital number, since it uses as much as digits as its factorization.

213481079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30497304.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 213481079 is about 14610.9917185659. The cubic root of 213481079 is about 597.6585402371.

The spelling of 213481079 in words is "two hundred thirteen million, four hundred eighty-one thousand, seventy-nine".