315400434521 has 4 divisors (see below), whose sum is σ = 322111082112. Its totient is φ = 308689786932.

The previous prime is 315400434499. The next prime is 315400434589. The reversal of 315400434521 is 125434004513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315400434521 - 2¹⁰ = 315400433497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315400434721) 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, 3355323725 + ... + 3355323818.

It is an arithmetic number, because the mean of its divisors is an integer number (80527770528).

Almost surely, 2^315400434521 is an apocalyptic number.

It is an amenable number.

315400434521 is a deficient number, since it is larger than the sum of its proper divisors (6710647591).

315400434521 is an equidigital number, since it uses as much as digits as its factorization.

315400434521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710647590.

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 315400434521 in words is "three hundred fifteen billion, four hundred million, four hundred thirty-four thousand, five hundred twenty-one".