353400523 has 4 divisors (see below), whose sum is σ = 403886320. Its totient is φ = 302914728.

The previous prime is 353400521. The next prime is 353400529. The reversal of 353400523 is 325004353.

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: 325004353 = 15923 ⋅20411.

It is a cyclic number.

It is not a de Polignac number, because 353400523 - 2¹ = 353400521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (353400521) 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, 25242888 + ... + 25242901.

It is an arithmetic number, because the mean of its divisors is an integer number (100971580).

Almost surely, 2^353400523 is an apocalyptic number.

353400523 is a deficient number, since it is larger than the sum of its proper divisors (50485797).

353400523 is an equidigital number, since it uses as much as digits as its factorization.

353400523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50485796.

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 353400523 is about 18798.9500504682. The cubic root of 353400523 is about 707.0048547661.

Adding to 353400523 its reverse (325004353), we get a palindrome (678404876).

The spelling of 353400523 in words is "three hundred fifty-three million, four hundred thousand, five hundred twenty-three".