31030230120121 has 2 divisors, whose sum is σ = 31030230120122. Its totient is φ = 31030230120120.

The previous prime is 31030230120083. The next prime is 31030230120167. The reversal of 31030230120121 is 12102103203013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26567468244496 + 4462761875625 = 5154364^2 + 2112525^2 .

It is a cyclic number.

It is not a de Polignac number, because 31030230120121 - 2²⁹ = 31029693249209 is a prime.

It is not a weakly prime, because it can be changed into another prime (31030230129121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15515115060060 + 15515115060061.

It is an arithmetic number, because the mean of its divisors is an integer number (15515115060061).

Almost surely, 2^{31030230120121} is an apocalyptic number.

It is an amenable number.

31030230120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

31030230120121 is an equidigital number, since it uses as much as digits as its factorization.

31030230120121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31030230120121 its reverse (12102103203013), we get a palindrome (43132333323134).

The spelling of 31030230120121 in words is "thirty-one trillion, thirty billion, two hundred thirty million, one hundred twenty thousand, one hundred twenty-one".