422115531 has 4 divisors (see below), whose sum is σ = 562820712. Its totient is φ = 281410352.

The previous prime is 422115523. The next prime is 422115557. The reversal of 422115531 is 135511224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422115531 - 2³ = 422115523 is a prime.

It is a super-2 number, since 2×422115531² = 356363043022823922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (422115581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70352586 + ... + 70352591.

It is an arithmetic number, because the mean of its divisors is an integer number (140705178).

Almost surely, 2^422115531 is an apocalyptic number.

422115531 is a deficient number, since it is larger than the sum of its proper divisors (140705181).

422115531 is a wasteful number, since it uses less digits than its factorization.

422115531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140705180.

The product of its digits is 1200, while the sum is 24.

The square root of 422115531 is about 20545.4503722844. The cubic root of 422115531 is about 750.1425098084.

Adding to 422115531 its reverse (135511224), we get a palindrome (557626755).

The spelling of 422115531 in words is "four hundred twenty-two million, one hundred fifteen thousand, five hundred thirty-one".