193320431 has 4 divisors (see below), whose sum is σ = 195127272. Its totient is φ = 191513592.

The previous prime is 193320419. The next prime is 193320443. The reversal of 193320431 is 134023391.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134023391 = 4817 ⋅27823.

It is an interprime number because it is at equal distance from previous prime (193320419) and next prime (193320443).

It is a cyclic number.

It is not a de Polignac number, because 193320431 - 2⁶ = 193320367 is a prime.

It is a super-2 number, since 2×193320431² = 74745578084051522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 193320431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193320401) 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, 903260 + ... + 903473.

It is an arithmetic number, because the mean of its divisors is an integer number (48781818).

Almost surely, 2^193320431 is an apocalyptic number.

193320431 is a deficient number, since it is larger than the sum of its proper divisors (1806841).

193320431 is a wasteful number, since it uses less digits than its factorization.

193320431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806840.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 193320431 is about 13903.9717706848. The cubic root of 193320431 is about 578.2193017283.

The spelling of 193320431 in words is "one hundred ninety-three million, three hundred twenty thousand, four hundred thirty-one".