1521234312 has 32 divisors (see below), whose sum is σ = 4095631680. Its totient is φ = 468072000.

The previous prime is 1521234257. The next prime is 1521234313. The reversal of 1521234312 is 2134321251.

It is a super-2 number, since 2×1521234312² = 4628307664012226688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1521234313) by changing a digit.

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, 2437564 + ... + 2438187.

It is an arithmetic number, because the mean of its divisors is an integer number (127988490).

Almost surely, 2^1521234312 is an apocalyptic number.

1521234312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1521234312 is an abundant number, since it is smaller than the sum of its proper divisors (2574397368).

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

1521234312 is a wasteful number, since it uses less digits than its factorization.

1521234312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875773 (or 4875769 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1521234312 is about 39003.0038843164. The cubic root of 1521234312 is about 1150.0905567001.

Adding to 1521234312 its reverse (2134321251), we get a palindrome (3655555563).

The spelling of 1521234312 in words is "one billion, five hundred twenty-one million, two hundred thirty-four thousand, three hundred twelve".