993355351 has 4 divisors (see below), whose sum is σ = 1025399104. Its totient is φ = 961311600.

The previous prime is 993355327. The next prime is 993355393. The reversal of 993355351 is 153553399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 153553399 = 347 ⋅442517.

It is a cyclic number.

It is not a de Polignac number, because 993355351 - 2²¹ = 991258199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 993355298 and 993355307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993355751) 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, 16021830 + ... + 16021891.

It is an arithmetic number, because the mean of its divisors is an integer number (256349776).

Almost surely, 2^993355351 is an apocalyptic number.

993355351 is a deficient number, since it is larger than the sum of its proper divisors (32043753).

993355351 is a wasteful number, since it uses less digits than its factorization.

993355351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32043752.

The product of its digits is 273375, while the sum is 43.

The square root of 993355351 is about 31517.5403704033. The cubic root of 993355351 is about 997.7801931034.

The spelling of 993355351 in words is "nine hundred ninety-three million, three hundred fifty-five thousand, three hundred fifty-one".