1520135312 has 20 divisors (see below), whose sum is σ = 3013758000. Its totient is φ = 742391328.

The previous prime is 1520135293. The next prime is 1520135317. The reversal of 1520135312 is 2135310251.

It is a happy number.

It is a super-2 number, since 2×1520135312² = 4621622733578674688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1520135317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104062 + ... + 1105437.

It is an arithmetic number, because the mean of its divisors is an integer number (150687900).

Almost surely, 2^1520135312 is an apocalyptic number.

It is an amenable number.

1520135312 is a deficient number, since it is larger than the sum of its proper divisors (1493622688).

1520135312 is a wasteful number, since it uses less digits than its factorization.

1520135312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209550 (or 2209544 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1520135312 is about 38988.9126804018. The cubic root of 1520135312 is about 1149.8135329679.

Adding to 1520135312 its reverse (2135310251), we get a palindrome (3655445563).

The spelling of 1520135312 in words is "one billion, five hundred twenty million, one hundred thirty-five thousand, three hundred twelve".