531000136 has 32 divisors (see below), whose sum is σ = 1011608640. Its totient is φ = 261263808.

The previous prime is 531000101. The next prime is 531000139. The reversal of 531000136 is 631000135.

It is a super-2 number, since 2×531000136² = 563922288864036992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531000139) 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, 182485 + ... + 185371.

It is an arithmetic number, because the mean of its divisors is an integer number (31612770).

Almost surely, 2^531000136 is an apocalyptic number.

It is an amenable number.

531000136 is a deficient number, since it is larger than the sum of its proper divisors (480608504).

531000136 is a wasteful number, since it uses less digits than its factorization.

531000136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253 (or 3249 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 531000136 is about 23043.4401945543. The cubic root of 531000136 is about 809.7759559191.

Subtracting 531000136 from its reverse (631000135), we obtain a palindrome (99999999).

The spelling of 531000136 in words is "five hundred thirty-one million, one hundred thirty-six", and thus it is an aban number.