1312515430 has 32 divisors (see below), whose sum is σ = 2569120416. Its totient is φ = 480766464.

The previous prime is 1312515427. The next prime is 1312515431. The reversal of 1312515430 is 345152131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1312515395 and 1312515404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312515431) 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, 98044 + ... + 110623.

It is an arithmetic number, because the mean of its divisors is an integer number (80285013).

Almost surely, 2^1312515430 is an apocalyptic number.

1312515430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312515430 is a deficient number, since it is larger than the sum of its proper divisors (1256604986).

1312515430 is a wasteful number, since it uses less digits than its factorization.

1312515430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208728.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1312515430 is about 36228.6548190793. The cubic root of 1312515430 is about 1094.8840754936.

Adding to 1312515430 its reverse (345152131), we get a palindrome (1657667561).

The spelling of 1312515430 in words is "one billion, three hundred twelve million, five hundred fifteen thousand, four hundred thirty".