315144561531 has 16 divisors (see below), whose sum is σ = 423742289408. Its totient is φ = 208328954400.

The previous prime is 315144561527. The next prime is 315144561577. The reversal of 315144561531 is 135165441513.

It is not a de Polignac number, because 315144561531 - 2² = 315144561527 is a prime.

It is a super-2 number, since 2×315144561531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315144561531.

It is not an unprimeable number, because it can be changed into a prime (315144565531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747016 + ... + 1090101.

It is an arithmetic number, because the mean of its divisors is an integer number (26483893088).

Almost surely, 2^315144561531 is an apocalyptic number.

315144561531 is a deficient number, since it is larger than the sum of its proper divisors (108597727877).

315144561531 is a wasteful number, since it uses less digits than its factorization.

315144561531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837602.

The product of its digits is 108000, while the sum is 39.

The spelling of 315144561531 in words is "three hundred fifteen billion, one hundred forty-four million, five hundred sixty-one thousand, five hundred thirty-one".