501513431 has 8 divisors (see below), whose sum is σ = 511761504. Its totient is φ = 491356800.

The previous prime is 501513427. The next prime is 501513433. The reversal of 501513431 is 134315105.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 501513431 - 2² = 501513427 is a prime.

It is a super-2 number, since 2×501513431² = 503031442946783522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501513397 and 501513406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501513433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11726 + ... + 33771.

It is an arithmetic number, because the mean of its divisors is an integer number (63970188).

Almost surely, 2^501513431 is an apocalyptic number.

501513431 is a deficient number, since it is larger than the sum of its proper divisors (10248073).

501513431 is a wasteful number, since it uses less digits than its factorization.

501513431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45721.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 501513431 is about 22394.4955513626. The cubic root of 501513431 is about 794.5005266828.

Adding to 501513431 its reverse (134315105), we get a palindrome (635828536).

The spelling of 501513431 in words is "five hundred one million, five hundred thirteen thousand, four hundred thirty-one".