1513121232 has 40 divisors (see below), whose sum is σ = 4467311296. Its totient is φ = 432320256.

The previous prime is 1513121219. The next prime is 1513121249. The reversal of 1513121232 is 2321213151.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1513121199 and 1513121208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2251333 + ... + 2252004.

Almost surely, 2^1513121232 is an apocalyptic number.

1513121232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1513121232 is an abundant number, since it is smaller than the sum of its proper divisors (2954190064).

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

1513121232 is a wasteful number, since it uses less digits than its factorization.

1513121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4503355 (or 4503349 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 1513121232 is about 38898.8590064027. The cubic root of 1513121232 is about 1148.0423485129.

Adding to 1513121232 its reverse (2321213151), we get a palindrome (3834334383).

It can be divided in two parts, 15131 and 21232, that added together give a palindrome (36363).

The spelling of 1513121232 in words is "one billion, five hundred thirteen million, one hundred twenty-one thousand, two hundred thirty-two".