531109031 has 8 divisors (see below), whose sum is σ = 554964480. Its totient is φ = 507317272.

The previous prime is 531109009. The next prime is 531109069. The reversal of 531109031 is 130901135.

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 531109031 - 2²² = 526914727 is a prime.

It is a super-2 number, since 2×531109031² = 564153605619517922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531108988 and 531109006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531109001) 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, 1550 + ... + 32628.

It is an arithmetic number, because the mean of its divisors is an integer number (69370560).

Almost surely, 2^531109031 is an apocalyptic number.

531109031 is a deficient number, since it is larger than the sum of its proper divisors (23855449).

531109031 is a wasteful number, since it uses less digits than its factorization.

531109031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31845.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 531109031 is about 23045.8028933687. The cubic root of 531109031 is about 809.8313071451.

The spelling of 531109031 in words is "five hundred thirty-one million, one hundred nine thousand, thirty-one".