31010240189 has 2 divisors, whose sum is σ = 31010240190. Its totient is φ = 31010240188.

The previous prime is 31010240147. The next prime is 31010240267. The reversal of 31010240189 is 98104201013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17637168025 + 13373072164 = 132805^2 + 115642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31010240189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31010230189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15505120094 + 15505120095.

It is an arithmetic number, because the mean of its divisors is an integer number (15505120095).

Almost surely, 2^31010240189 is an apocalyptic number.

It is an amenable number.

31010240189 is a deficient number, since it is larger than the sum of its proper divisors (1).

31010240189 is an equidigital number, since it uses as much as digits as its factorization.

31010240189 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 31010240189 in words is "thirty-one billion, ten million, two hundred forty thousand, one hundred eighty-nine".