31423442332 has 12 divisors (see below), whose sum is σ = 55154204560. Its totient is φ = 15665098176.

The previous prime is 31423442327. The next prime is 31423442341. The reversal of 31423442332 is 23324432413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31423442294 and 31423442303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11654232 + ... + 11656927.

Almost surely, 2^31423442332 is an apocalyptic number.

It is an amenable number.

31423442332 is a deficient number, since it is larger than the sum of its proper divisors (23730762228).

31423442332 is a wasteful number, since it uses less digits than its factorization.

31423442332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23311500 (or 23311498 counting only the distinct ones).

The product of its digits is 41472, while the sum is 31.

Adding to 31423442332 its reverse (23324432413), we get a palindrome (54747874745).

The spelling of 31423442332 in words is "thirty-one billion, four hundred twenty-three million, four hundred forty-two thousand, three hundred thirty-two".