121000031423 has 2 divisors, whose sum is σ = 121000031424. Its totient is φ = 121000031422.

The previous prime is 121000031401. The next prime is 121000031437. The reversal of 121000031423 is 324130000121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121000031423 - 2⁶ = 121000031359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000031123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500015711 + 60500015712.

It is an arithmetic number, because the mean of its divisors is an integer number (60500015712).

Almost surely, 2^121000031423 is an apocalyptic number.

121000031423 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000031423 is an equidigital number, since it uses as much as digits as its factorization.

121000031423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 121000031423 its reverse (324130000121), we get a palindrome (445130031544).

The spelling of 121000031423 in words is "one hundred twenty-one billion, thirty-one thousand, four hundred twenty-three".