531245204312405 has 16 divisors (see below), whose sum is σ = 707235526238400. Its totient is φ = 379811671493760.

The previous prime is 531245204312281. The next prime is 531245204312497. The reversal of 531245204312405 is 504213402542135.

It is not a de Polignac number, because 531245204312405 - 2⁴² = 526847157801301 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81855960440 + ... + 81855966929.

It is an arithmetic number, because the mean of its divisors is an integer number (44202220389900).

Almost surely, 2^{531245204312405} is an apocalyptic number.

531245204312405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

531245204312405 is a deficient number, since it is larger than the sum of its proper divisors (175990321925995).

531245204312405 is a wasteful number, since it uses less digits than its factorization.

531245204312405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163711927444.

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 531245204312405 in words is "five hundred thirty-one trillion, two hundred forty-five billion, two hundred four million, three hundred twelve thousand, four hundred five".