3405312451523 has 4 divisors (see below), whose sum is σ = 3408819468408. Its totient is φ = 3401805434640.

The previous prime is 3405312451393. The next prime is 3405312451547. The reversal of 3405312451523 is 3251542135043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3405312451523 - 2⁸ = 3405312451267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3405312451823) 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, 1753506986 + ... + 1753508927.

It is an arithmetic number, because the mean of its divisors is an integer number (852204867102).

Almost surely, 2^{3405312451523} is an apocalyptic number.

3405312451523 is a deficient number, since it is larger than the sum of its proper divisors (3507016885).

3405312451523 is an equidigital number, since it uses as much as digits as its factorization.

3405312451523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507016884.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 3405312451523 its reverse (3251542135043), we get a palindrome (6656854586566).

The spelling of 3405312451523 in words is "three trillion, four hundred five billion, three hundred twelve million, four hundred fifty-one thousand, five hundred twenty-three".