531000011 has 8 divisors (see below), whose sum is σ = 583249920. Its totient is φ = 481180392.

The previous prime is 530999999. The next prime is 531000013. The reversal of 531000011 is 110000135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 531000011 - 2²⁶ = 463891147 is a prime.

It is a super-2 number, since 2×531000011² = 563922023364000242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 530999956 and 531000001.

It is not an unprimeable number, because it can be changed into a prime (531000013) 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, 607115 + ... + 607988.

It is an arithmetic number, because the mean of its divisors is an integer number (72906240).

Almost surely, 2^531000011 is an apocalyptic number.

531000011 is a deficient number, since it is larger than the sum of its proper divisors (52249909).

531000011 is a wasteful number, since it uses less digits than its factorization.

531000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215145.

The product of its (nonzero) digits is 15, while the sum is 11.

The square root of 531000011 is about 23043.4374822855. The cubic root of 531000011 is about 809.7758923774.

Adding to 531000011 its reverse (110000135), we get a palindrome (641000146).

The spelling of 531000011 in words is "five hundred thirty-one million, eleven", and thus it is an aban number.