31143001147 has 2 divisors, whose sum is σ = 31143001148. Its totient is φ = 31143001146.

The previous prime is 31143001051. The next prime is 31143001151. The reversal of 31143001147 is 74110034113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31143001147 is a prime.

It is not a weakly prime, because it can be changed into another prime (31143101147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571500573 + 15571500574.

It is an arithmetic number, because the mean of its divisors is an integer number (15571500574).

Almost surely, 2^31143001147 is an apocalyptic number.

31143001147 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143001147 is an equidigital number, since it uses as much as digits as its factorization.

31143001147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The spelling of 31143001147 in words is "thirty-one billion, one hundred forty-three million, one thousand, one hundred forty-seven".