213112926691 has 8 divisors (see below), whose sum is σ = 243570345984. Its totient is φ = 182658686280.

The previous prime is 213112926671. The next prime is 213112926743. The reversal of 213112926691 is 196629211312.

213112926691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213112926691 - 2⁵ = 213112926659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213112926671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649285 + ... + 920758.

It is an arithmetic number, because the mean of its divisors is an integer number (30446293248).

Almost surely, 2^213112926691 is an apocalyptic number.

213112926691 is a deficient number, since it is larger than the sum of its proper divisors (30457419293).

213112926691 is a wasteful number, since it uses less digits than its factorization.

213112926691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589441.

The product of its digits is 69984, while the sum is 43.

The spelling of 213112926691 in words is "two hundred thirteen billion, one hundred twelve million, nine hundred twenty-six thousand, six hundred ninety-one".