31230121221703 has 2 divisors, whose sum is σ = 31230121221704. Its totient is φ = 31230121221702.

The previous prime is 31230121221697. The next prime is 31230121221709. The reversal of 31230121221703 is 30712212103213.

It is a balanced prime because it is at equal distance from previous prime (31230121221697) and next prime (31230121221709).

It is a cyclic number.

It is not a de Polignac number, because 31230121221703 - 2⁴¹ = 29031097966151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31230121221709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615060610851 + 15615060610852.

It is an arithmetic number, because the mean of its divisors is an integer number (15615060610852).

Almost surely, 2^{31230121221703} is an apocalyptic number.

31230121221703 is a deficient number, since it is larger than the sum of its proper divisors (1).

31230121221703 is an equidigital number, since it uses as much as digits as its factorization.

31230121221703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 31230121221703 its reverse (30712212103213), we get a palindrome (61942333324916).

The spelling of 31230121221703 in words is "thirty-one trillion, two hundred thirty billion, one hundred twenty-one million, two hundred twenty-one thousand, seven hundred three".