531031401 has 6 divisors (see below), whose sum is σ = 767045370. Its totient is φ = 354020928.

The previous prime is 531031387. The next prime is 531031421. The reversal of 531031401 is 104130135.

It can be written as a sum of positive squares in only one way, i.e., 267813225 + 263218176 = 16365^2 + 16224^2 .

It is not a de Polignac number, because 531031401 - 2¹³ = 531023209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531031421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29501736 + ... + 29501753.

It is an arithmetic number, because the mean of its divisors is an integer number (127840895).

Almost surely, 2^531031401 is an apocalyptic number.

It is an amenable number.

531031401 is a deficient number, since it is larger than the sum of its proper divisors (236013969).

531031401 is a wasteful number, since it uses less digits than its factorization.

531031401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59003495 (or 59003492 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 531031401 is about 23044.1185771988. The cubic root of 531031401 is about 809.7918486635.

Adding to 531031401 its reverse (104130135), we get a palindrome (635161536).

The spelling of 531031401 in words is "five hundred thirty-one million, thirty-one thousand, four hundred one".