98431121 has 2 divisors, whose sum is σ = 98431122. Its totient is φ = 98431120.

The previous prime is 98431117. The next prime is 98431129. The reversal of 98431121 is 12113489.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70224400 + 28206721 = 8380^2 + 5311^2 .

It is an emirp because it is prime and its reverse (12113489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98431121 - 2² = 98431117 is a prime.

It is not a weakly prime, because it can be changed into another prime (98431129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49215560 + 49215561.

It is an arithmetic number, because the mean of its divisors is an integer number (49215561).

Almost surely, 2^98431121 is an apocalyptic number.

It is an amenable number.

98431121 is a deficient number, since it is larger than the sum of its proper divisors (1).

98431121 is an equidigital number, since it uses as much as digits as its factorization.

98431121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The square root of 98431121 is about 9921.2459399009. The cubic root of 98431121 is about 461.7187136660.

The spelling of 98431121 in words is "ninety-eight million, four hundred thirty-one thousand, one hundred twenty-one".