213193457 has 8 divisors (see below), whose sum is σ = 217948800. Its totient is φ = 208447344.

The previous prime is 213193411. The next prime is 213193469. The reversal of 213193457 is 754391312.

213193457 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 a cyclic number.

It is not a de Polignac number, because 213193457 - 2²⁶ = 146084593 is a prime.

It is a super-2 number, since 2×213193457² = 90902900215221698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213199457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67019 + ... + 70127.

It is an arithmetic number, because the mean of its divisors is an integer number (27243600).

Almost surely, 2^213193457 is an apocalyptic number.

It is an amenable number.

213193457 is a deficient number, since it is larger than the sum of its proper divisors (4755343).

213193457 is a wasteful number, since it uses less digits than its factorization.

213193457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4615.

The product of its digits is 22680, while the sum is 35.

The square root of 213193457 is about 14601.1457427149. The cubic root of 213193457 is about 597.3900121421.

The spelling of 213193457 in words is "two hundred thirteen million, one hundred ninety-three thousand, four hundred fifty-seven".