405223323031523 has 16 divisors (see below), whose sum is σ = 409698195454080. Its totient is φ = 400757693616000.

The previous prime is 405223323031511. The next prime is 405223323031567. The reversal of 405223323031523 is 325130323322504.

It is a cyclic number.

It is not a de Polignac number, because 405223323031523 - 2¹⁸ = 405223322769379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405223323033523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481420913 + ... + 482261901.

It is an arithmetic number, because the mean of its divisors is an integer number (25606137215880).

Almost surely, 2^{405223323031523} is an apocalyptic number.

405223323031523 is a deficient number, since it is larger than the sum of its proper divisors (4474872422557).

405223323031523 is a wasteful number, since it uses less digits than its factorization.

405223323031523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846478.

The product of its (nonzero) digits is 388800, while the sum is 38.

The spelling of 405223323031523 in words is "four hundred five trillion, two hundred twenty-three billion, three hundred twenty-three million, thirty-one thousand, five hundred twenty-three".