31001111147 has 2 divisors, whose sum is σ = 31001111148. Its totient is φ = 31001111146.

The previous prime is 31001111137. The next prime is 31001111161. The reversal of 31001111147 is 74111110013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31001111147 - 2¹⁶ = 31001045611 is a prime.

It is a super-2 number, since 2×31001111147² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31001111137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15500555573 + 15500555574.

It is an arithmetic number, because the mean of its divisors is an integer number (15500555574).

Almost surely, 2^31001111147 is an apocalyptic number.

31001111147 is a deficient number, since it is larger than the sum of its proper divisors (1).

31001111147 is an equidigital number, since it uses as much as digits as its factorization.

31001111147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 20.

The spelling of 31001111147 in words is "thirty-one billion, one million, one hundred eleven thousand, one hundred forty-seven".