1520313512 has 16 divisors (see below), whose sum is σ = 2911239360. Its totient is φ = 743983024.

The previous prime is 1520313511. The next prime is 1520313517. The reversal of 1520313512 is 2153130251.

It is a happy number.

It is a super-2 number, since 2×1520313512² = 4622706349539548288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1520313511) 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, 2021318 + ... + 2022069.

It is an arithmetic number, because the mean of its divisors is an integer number (181952460).

Almost surely, 2^1520313512 is an apocalyptic number.

It is an amenable number.

1520313512 is a deficient number, since it is larger than the sum of its proper divisors (1390925848).

1520313512 is a wasteful number, since it uses less digits than its factorization.

1520313512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043440 (or 4043436 counting only the distinct ones).

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

The square root of 1520313512 is about 38991.1978784956. The cubic root of 1520313512 is about 1149.8584607152.

Adding to 1520313512 its reverse (2153130251), we get a palindrome (3673443763).

The spelling of 1520313512 in words is "one billion, five hundred twenty million, three hundred thirteen thousand, five hundred twelve".