523431220422 has 32 divisors (see below), whose sum is σ = 1152138245760. Its totient is φ = 157211841920.

The previous prime is 523431220393. The next prime is 523431220423. The reversal of 523431220422 is 224022134325.

It is a self number, because there is not a number n which added to its sum of digits gives 523431220422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523431220423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35084472 + ... + 35099387.

It is an arithmetic number, because the mean of its divisors is an integer number (36004320180).

Almost surely, 2^523431220422 is an apocalyptic number.

523431220422 is an abundant number, since it is smaller than the sum of its proper divisors (628707025338).

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

523431220422 is a wasteful number, since it uses less digits than its factorization.

523431220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70183988.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 523431220422 its reverse (224022134325), we get a palindrome (747453354747).

The spelling of 523431220422 in words is "five hundred twenty-three billion, four hundred thirty-one million, two hundred twenty thousand, four hundred twenty-two".