31032422421 has 192 divisors, whose sum is σ = 60159343104. Its totient is φ = 13795246080.

The previous prime is 31032422413. The next prime is 31032422437. The reversal of 31032422421 is 12422423013.

It is a happy number.

It is not a de Polignac number, because 31032422421 - 2³ = 31032422413 is a prime.

It is a super-2 number, since 2×31032422421² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31032422391 and 31032422400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31032402421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 40993575 + ... + 40994331.

It is an arithmetic number, because the mean of its divisors is an integer number (313329912).

Almost surely, 2^31032422421 is an apocalyptic number.

It is an amenable number.

31032422421 is a deficient number, since it is larger than the sum of its proper divisors (29126920683).

31032422421 is a wasteful number, since it uses less digits than its factorization.

31032422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31032422421 its reverse (12422423013), we get a palindrome (43454845434).

The spelling of 31032422421 in words is "thirty-one billion, thirty-two million, four hundred twenty-two thousand, four hundred twenty-one".