531401205 has 32 divisors (see below), whose sum is σ = 879540480. Its totient is φ = 273784320.

The previous prime is 531401203. The next prime is 531401207. The reversal of 531401205 is 502104135.

It is an interprime number because it is at equal distance from previous prime (531401203) and next prime (531401207).

It is not a de Polignac number, because 531401205 - 2¹ = 531401203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531401203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59151 + ... + 67539.

It is an arithmetic number, because the mean of its divisors is an integer number (27485640).

Almost surely, 2^531401205 is an apocalyptic number.

It is an amenable number.

531401205 is a deficient number, since it is larger than the sum of its proper divisors (348139275).

531401205 is a wasteful number, since it uses less digits than its factorization.

531401205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8541.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 531401205 is about 23052.1410068566. The cubic root of 531401205 is about 809.9797815407.

It can be divided in two parts, 53140 and 1205, that added together give a palindrome (54345).

The spelling of 531401205 in words is "five hundred thirty-one million, four hundred one thousand, two hundred five".