501431 has 4 divisors (see below), whose sum is σ = 573072. Its totient is φ = 429792.

The previous prime is 501427. The next prime is 501451. The reversal of 501431 is 134105.

501431 = T₃₇₅ + T₃₇₆ + ... + T₃₈₁.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134105 = 5 ⋅26821.

It is a cyclic number.

It is not a de Polignac number, because 501431 - 2² = 501427 is a prime.

It is a super-2 number, since 2×501431² = 502866095522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 501431.

It is not an unprimeable number, because it can be changed into a prime (501401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35810 + ... + 35823.

It is an arithmetic number, because the mean of its divisors is an integer number (143268).

2⁵⁰¹⁴³¹ is an apocalyptic number.

501431 is a deficient number, since it is larger than the sum of its proper divisors (71641).

501431 is an equidigital number, since it uses as much as digits as its factorization.

501431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71640.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 501431 is about 708.1179280318. The cubic root of 501431 is about 79.4456995073.

Adding to 501431 its reverse (134105), we get a palindrome (635536).

The spelling of 501431 in words is "five hundred one thousand, four hundred thirty-one".