31130122221383 has 2 divisors, whose sum is σ = 31130122221384. Its totient is φ = 31130122221382.

The previous prime is 31130122221379. The next prime is 31130122221391. The reversal of 31130122221383 is 38312222103113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31130122221383 - 2² = 31130122221379 is a prime.

It is a super-3 number, since 3×31130122221383³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31130122221283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15565061110691 + 15565061110692.

It is an arithmetic number, because the mean of its divisors is an integer number (15565061110692).

Almost surely, 2^{31130122221383} is an apocalyptic number.

31130122221383 is a deficient number, since it is larger than the sum of its proper divisors (1).

31130122221383 is an equidigital number, since it uses as much as digits as its factorization.

31130122221383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 31130122221383 its reverse (38312222103113), we get a palindrome (69442344324496).

The spelling of 31130122221383 in words is "thirty-one trillion, one hundred thirty billion, one hundred twenty-two million, two hundred twenty-one thousand, three hundred eighty-three".