193400831 has 8 divisors (see below), whose sum is σ = 210426384. Its totient is φ = 176682240.

The previous prime is 193400821. The next prime is 193400833. The reversal of 193400831 is 138004391.

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 193400831 - 2¹⁰ = 193399807 is a prime.

It is a super-2 number, since 2×193400831² = 74807762862981122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 193400794 and 193400803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193400833) 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, 75425 + ... + 77946.

It is an arithmetic number, because the mean of its divisors is an integer number (26303298).

Almost surely, 2^193400831 is an apocalyptic number.

193400831 is a deficient number, since it is larger than the sum of its proper divisors (17025553).

193400831 is a wasteful number, since it uses less digits than its factorization.

193400831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153481.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 193400831 is about 13906.8627303213. The cubic root of 193400831 is about 578.2994491263.

The spelling of 193400831 in words is "one hundred ninety-three million, four hundred thousand, eight hundred thirty-one".