31442051332 has 6 divisors (see below), whose sum is σ = 55023589838. Its totient is φ = 15721025664.

The previous prime is 31442051321. The next prime is 31442051359. The reversal of 31442051332 is 23315024413.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31083100416 + 358950916 = 176304^2 + 18946^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31442051332.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3930256413 + ... + 3930256420.

Almost surely, 2^31442051332 is an apocalyptic number.

It is an amenable number.

31442051332 is a deficient number, since it is larger than the sum of its proper divisors (23581538506).

31442051332 is a wasteful number, since it uses less digits than its factorization.

31442051332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7860512837 (or 7860512835 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 31442051332 its reverse (23315024413), we get a palindrome (54757075745).

The spelling of 31442051332 in words is "thirty-one billion, four hundred forty-two million, fifty-one thousand, three hundred thirty-two".