15315431234 has 16 divisors (see below), whose sum is σ = 23170924800. Its totient is φ = 7592064480.

The previous prime is 15315431231. The next prime is 15315431267. The reversal of 15315431234 is 43213451351.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15315431234.

It is not an unprimeable number, because it can be changed into a prime (15315431231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43367 + ... + 180309.

It is an arithmetic number, because the mean of its divisors is an integer number (1448182800).

Almost surely, 2^15315431234 is an apocalyptic number.

15315431234 is a deficient number, since it is larger than the sum of its proper divisors (7855493566).

15315431234 is a wasteful number, since it uses less digits than its factorization.

15315431234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137425.

The product of its digits is 21600, while the sum is 32.

Adding to 15315431234 its reverse (43213451351), we get a palindrome (58528882585).

The spelling of 15315431234 in words is "fifteen billion, three hundred fifteen million, four hundred thirty-one thousand, two hundred thirty-four".