31140201187 has 2 divisors, whose sum is σ = 31140201188. Its totient is φ = 31140201186.

The previous prime is 31140201179. The next prime is 31140201271. The reversal of 31140201187 is 78110204113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31140201187 - 2³ = 31140201179 is a prime.

It is not a weakly prime, because it can be changed into another prime (31140201167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15570100593 + 15570100594.

It is an arithmetic number, because the mean of its divisors is an integer number (15570100594).

Almost surely, 2^31140201187 is an apocalyptic number.

31140201187 is a deficient number, since it is larger than the sum of its proper divisors (1).

31140201187 is an equidigital number, since it uses as much as digits as its factorization.

31140201187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 28.

The spelling of 31140201187 in words is "thirty-one billion, one hundred forty million, two hundred one thousand, one hundred eighty-seven".