193421071 has 4 divisors (see below), whose sum is σ = 193449672. Its totient is φ = 193392472.

The previous prime is 193421069. The next prime is 193421117. The reversal of 193421071 is 170124391.

193421071 = T₁₁₃₅₄ + T₁₁₃₅₅ + T₁₁₃₅₆.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 170124391 = 4877 ⋅34883.

It is a cyclic number.

It is not a de Polignac number, because 193421071 - 2¹ = 193421069 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 (193421021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2160 + ... + 19786.

It is an arithmetic number, because the mean of its divisors is an integer number (48362418).

Almost surely, 2^193421071 is an apocalyptic number.

193421071 is the 11356-th centered triangular number.

193421071 is a deficient number, since it is larger than the sum of its proper divisors (28601).

193421071 is a wasteful number, since it uses less digits than its factorization.

193421071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28600.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 193421071 is about 13907.5904095569. The cubic root of 193421071 is about 578.3196220361.

It can be divided in two parts, 1934 and 21071, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 193421071 in words is "one hundred ninety-three million, four hundred twenty-one thousand, seventy-one".