31432422021 has 64 divisors (see below), whose sum is σ = 56419614720. Its totient is φ = 15032586240.

The previous prime is 31432422013. The next prime is 31432422031. The reversal of 31432422021 is 12022423413.

It is a happy number.

It is not a de Polignac number, because 31432422021 - 2³ = 31432422013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31432421982 and 31432422000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31432422001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1136485 + ... + 1163813.

It is an arithmetic number, because the mean of its divisors is an integer number (881556480).

Almost surely, 2^31432422021 is an apocalyptic number.

It is an amenable number.

31432422021 is a deficient number, since it is larger than the sum of its proper divisors (24987192699).

31432422021 is a wasteful number, since it uses less digits than its factorization.

31432422021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27746.

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

Adding to 31432422021 its reverse (12022423413), we get a palindrome (43454845434).

The spelling of 31432422021 in words is "thirty-one billion, four hundred thirty-two million, four hundred twenty-two thousand, twenty-one".