31220433122330 has 16 divisors (see below), whose sum is σ = 56209857840360. Its totient is φ = 12485266977792.

The previous prime is 31220433122279. The next prime is 31220433122371. The reversal of 31220433122330 is 3322133402213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 30539671165441 + 680761956889 = 5526271^2 + 825083^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31220433122293 and 31220433122302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363238775 + ... + 363324714.

Almost surely, 2^{31220433122330} is an apocalyptic number.

31220433122330 is a deficient number, since it is larger than the sum of its proper divisors (24989424718030).

31220433122330 is a wasteful number, since it uses less digits than its factorization.

31220433122330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726567793.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 31220433122330 its reverse (3322133402213), we get a palindrome (34542566524543).

The spelling of 31220433122330 in words is "thirty-one trillion, two hundred twenty billion, four hundred thirty-three million, one hundred twenty-two thousand, three hundred thirty".