355640423 has 8 divisors (see below), whose sum is σ = 375438000. Its totient is φ = 335950848.

The previous prime is 355640419. The next prime is 355640443. The reversal of 355640423 is 324046553.

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 355640423 - 2² = 355640419 is a prime.

It is a super-2 number, since 2×355640423² = 252960220943237858, 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 355640423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355640443) 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, 20186 + ... + 33447.

It is an arithmetic number, because the mean of its divisors is an integer number (46929750).

Almost surely, 2^355640423 is an apocalyptic number.

355640423 is a deficient number, since it is larger than the sum of its proper divisors (19797577).

355640423 is a wasteful number, since it uses less digits than its factorization.

355640423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54001.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 355640423 is about 18858.4310853263. The cubic root of 355640423 is about 708.4954073359.

Adding to 355640423 its reverse (324046553), we get a palindrome (679686976).

The spelling of 355640423 in words is "three hundred fifty-five million, six hundred forty thousand, four hundred twenty-three".