531535155112 has 32 divisors (see below), whose sum is σ = 1079496177480. Its totient is φ = 243905852160.

The previous prime is 531535155103. The next prime is 531535155113. The reversal of 531535155112 is 211551535135.

It can be written as a sum of positive squares in 4 ways, for example, as 412762561156 + 118772593956 = 642466^2 + 344634^2 .

It is a super-2 number, since 2×531535155112² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531535155113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14753439 + ... + 14789422.

Almost surely, 2^531535155112 is an apocalyptic number.

531535155112 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

531535155112 is an abundant number, since it is smaller than the sum of its proper divisors (547961022368).

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

531535155112 is a wasteful number, since it uses less digits than its factorization.

531535155112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29543053 (or 29543049 counting only the distinct ones).

The product of its digits is 56250, while the sum is 37.

The spelling of 531535155112 in words is "five hundred thirty-one billion, five hundred thirty-five million, one hundred fifty-five thousand, one hundred twelve".