531103431 has 8 divisors (see below), whose sum is σ = 723204864. Its totient is φ = 346535480.

The previous prime is 531103423. The next prime is 531103451. The reversal of 531103431 is 134301135.

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 531103431 - 2³ = 531103423 is a prime.

It is a super-2 number, since 2×531103431² = 564141708839943522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 531103398 and 531103407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531103451) 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, 1883205 + ... + 1883486.

It is an arithmetic number, because the mean of its divisors is an integer number (90400608).

Almost surely, 2^531103431 is an apocalyptic number.

531103431 is a deficient number, since it is larger than the sum of its proper divisors (192101433).

531103431 is a wasteful number, since it uses less digits than its factorization.

531103431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766741.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 531103431 is about 23045.6813958711. The cubic root of 531103431 is about 809.8284608549.

Adding to 531103431 its reverse (134301135), we get a palindrome (665404566).

The spelling of 531103431 in words is "five hundred thirty-one million, one hundred three thousand, four hundred thirty-one".