133515031512 has 32 divisors (see below), whose sum is σ = 333872985600. Its totient is φ = 44493622944.

The previous prime is 133515031493. The next prime is 133515031523. The reversal of 133515031512 is 215130515331.

It is a super-2 number, since 2×133515031512² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133515031512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615708 + ... + 803819.

It is an arithmetic number, because the mean of its divisors is an integer number (10433530800).

Almost surely, 2^133515031512 is an apocalyptic number.

133515031512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133515031512 is an abundant number, since it is smaller than the sum of its proper divisors (200357954088).

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

133515031512 is a wasteful number, since it uses less digits than its factorization.

133515031512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423455 (or 1423451 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 30.

Adding to 133515031512 its reverse (215130515331), we get a palindrome (348645546843).

The spelling of 133515031512 in words is "one hundred thirty-three billion, five hundred fifteen million, thirty-one thousand, five hundred twelve".