31301129989 has 2 divisors, whose sum is σ = 31301129990. Its totient is φ = 31301129988.

The previous prime is 31301129971. The next prime is 31301130023. The reversal of 31301129989 is 98992110313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31273092964 + 28037025 = 176842^2 + 5295^2 .

It is a cyclic number.

It is not a de Polignac number, because 31301129989 - 2²⁹ = 30764259077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31301129089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650564994 + 15650564995.

It is an arithmetic number, because the mean of its divisors is an integer number (15650564995).

Almost surely, 2^31301129989 is an apocalyptic number.

It is an amenable number.

31301129989 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301129989 is an equidigital number, since it uses as much as digits as its factorization.

31301129989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 46.

It can be divided in two parts, 313011 and 29989, that added together give a cube (343000 = 70³).

The spelling of 31301129989 in words is "thirty-one billion, three hundred one million, one hundred twenty-nine thousand, nine hundred eighty-nine".