531402 has 16 divisors (see below), whose sum is σ = 1097472. Its totient is φ = 171360.

The previous prime is 531383. The next prime is 531457. The reversal of 531402 is 204135.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 531402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1243 + ... + 1614.

It is an arithmetic number, because the mean of its divisors is an integer number (68592).

2⁵³¹⁴⁰² is an apocalyptic number.

531402 is an abundant number, since it is smaller than the sum of its proper divisors (566070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531402 is a wasteful number, since it uses less digits than its factorization.

531402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 531402 is about 728.9732505380. The cubic root of 531402 is about 80.9980185463.

Adding to 531402 its reverse (204135), we get a palindrome (735537).

The spelling of 531402 in words is "five hundred thirty-one thousand, four hundred two".