31013321320222 has 4 divisors (see below), whose sum is σ = 46519981980336. Its totient is φ = 15506660660110.

The previous prime is 31013321320199. The next prime is 31013321320231. The reversal of 31013321320222 is 22202312331013.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×31013321320222² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7753330330054 + ... + 7753330330057.

It is an arithmetic number, because the mean of its divisors is an integer number (11629995495084).

Almost surely, 2^{31013321320222} is an apocalyptic number.

31013321320222 is a deficient number, since it is larger than the sum of its proper divisors (15506660660114).

31013321320222 is a wasteful number, since it uses less digits than its factorization.

31013321320222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15506660660113.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31013321320222 its reverse (22202312331013), we get a palindrome (53215633651235).

The spelling of 31013321320222 in words is "thirty-one trillion, thirteen billion, three hundred twenty-one million, three hundred twenty thousand, two hundred twenty-two".