501122045431 has 24 divisors (see below), whose sum is σ = 590132032800. Its totient is φ = 425359867968.

The previous prime is 501122045407. The next prime is 501122045441. The reversal of 501122045431 is 134540221105.

It is not a de Polignac number, because 501122045431 - 2¹⁹ = 501121521143 is a prime.

It is a super-2 number, since 2×501122045431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 501122045431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501122045441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3570031 + ... + 3707743.

It is an arithmetic number, because the mean of its divisors is an integer number (24588834700).

Almost surely, 2^501122045431 is an apocalyptic number.

501122045431 is a deficient number, since it is larger than the sum of its proper divisors (89009987369).

501122045431 is an equidigital number, since it uses as much as digits as its factorization.

501122045431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137940 (or 137823 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 501122045431 its reverse (134540221105), we get a palindrome (635662266536).

The spelling of 501122045431 in words is "five hundred one billion, one hundred twenty-two million, forty-five thousand, four hundred thirty-one".