501342831 has 32 divisors (see below), whose sum is σ = 811814400. Its totient is φ = 303258240.

The previous prime is 501342823. The next prime is 501342841. The reversal of 501342831 is 138243105.

It is a happy number.

It is not a de Polignac number, because 501342831 - 2³ = 501342823 is a prime.

It is a super-2 number, since 2×501342831² = 502689268390189122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 501342795 and 501342804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501342841) 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, 190855 + ... + 193463.

It is an arithmetic number, because the mean of its divisors is an integer number (25369200).

Almost surely, 2^501342831 is an apocalyptic number.

501342831 is a deficient number, since it is larger than the sum of its proper divisors (310471569).

501342831 is a wasteful number, since it uses less digits than its factorization.

501342831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276 (or 3270 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 501342831 is about 22390.6862556734. The cubic root of 501342831 is about 794.4104279580.

Adding to 501342831 its reverse (138243105), we get a palindrome (639585936).

The spelling of 501342831 in words is "five hundred one million, three hundred forty-two thousand, eight hundred thirty-one".