1523213301512 has 128 divisors (see below), whose sum is σ = 3427007201280. Its totient is φ = 620984448000.

The previous prime is 1523213301427. The next prime is 1523213301539. The reversal of 1523213301512 is 2151033123251.

It is a super-2 number, since 2×1523213301512² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41518937 + ... + 41555607.

It is an arithmetic number, because the mean of its divisors is an integer number (26773493760).

Almost surely, 2^{1523213301512} 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 1523213301512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1713503600640).

1523213301512 is an abundant number, since it is smaller than the sum of its proper divisors (1903793899768).

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

1523213301512 is a wasteful number, since it uses less digits than its factorization.

1523213301512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37123 (or 37119 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 1523213301512 its reverse (2151033123251), we get a palindrome (3674246424763).

The spelling of 1523213301512 in words is "one trillion, five hundred twenty-three billion, two hundred thirteen million, three hundred one thousand, five hundred twelve".