1315154512 has 60 divisors (see below), whose sum is σ = 2969598996. Its totient is φ = 562598400.

The previous prime is 1315154471. The next prime is 1315154531. The reversal of 1315154512 is 2154515131.

It can be written as a sum of positive squares in 2 ways, for example, as 504271936 + 810882576 = 22456^2 + 28476^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548388 + ... + 550780.

Almost surely, 2^1315154512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1315154512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1484799498).

1315154512 is an abundant number, since it is smaller than the sum of its proper divisors (1654444484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315154512 is a wasteful number, since it uses less digits than its factorization.

1315154512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116 (or 3103 counting only the distinct ones).

The product of its digits is 3000, while the sum is 28.

The square root of 1315154512 is about 36265.0591065284. The cubic root of 1315154512 is about 1095.6174140162.

Adding to 1315154512 its reverse (2154515131), we get a palindrome (3469669643).

The spelling of 1315154512 in words is "one billion, three hundred fifteen million, one hundred fifty-four thousand, five hundred twelve".