531305401 has 8 divisors (see below), whose sum is σ = 580509504. Its totient is φ = 482251920.

The previous prime is 531305393. The next prime is 531305407. The reversal of 531305401 is 104503135.

It is a happy number.

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 531305401 - 2³ = 531305393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531305407) 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, 30210 + ... + 44443.

It is an arithmetic number, because the mean of its divisors is an integer number (72563688).

Almost surely, 2^531305401 is an apocalyptic number.

It is an amenable number.

531305401 is a deficient number, since it is larger than the sum of its proper divisors (49204103).

531305401 is a wasteful number, since it uses less digits than its factorization.

531305401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75311.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 531305401 is about 23050.0629283306. The cubic root of 531305401 is about 809.9311027107.

Adding to 531305401 its reverse (104503135), we get a palindrome (635808536).

The spelling of 531305401 in words is "five hundred thirty-one million, three hundred five thousand, four hundred one".