31320427322 has 4 divisors (see below), whose sum is σ = 46980640986. Its totient is φ = 15660213660.

The previous prime is 31320427297. The next prime is 31320427339. The reversal of 31320427322 is 22372402313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22372402313 = 15859 ⋅1410707.

It can be written as a sum of positive squares in only one way, i.e., 29693837761 + 1626589561 = 172319^2 + 40331^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7830106829 + ... + 7830106832.

Almost surely, 2^31320427322 is an apocalyptic number.

31320427322 is a deficient number, since it is larger than the sum of its proper divisors (15660213664).

31320427322 is a wasteful number, since it uses less digits than its factorization.

31320427322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15660213663.

The product of its (nonzero) digits is 12096, while the sum is 29.

Adding to 31320427322 its reverse (22372402313), we get a palindrome (53692829635).

The spelling of 31320427322 in words is "thirty-one billion, three hundred twenty million, four hundred twenty-seven thousand, three hundred twenty-two".