31143000004187 has 2 divisors, whose sum is σ = 31143000004188. Its totient is φ = 31143000004186.

The previous prime is 31143000004111. The next prime is 31143000004199. The reversal of 31143000004187 is 78140000034113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31143000004187 is a prime.

It is not a weakly prime, because it can be changed into another prime (31143000001187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571500002093 + 15571500002094.

It is an arithmetic number, because the mean of its divisors is an integer number (15571500002094).

Almost surely, 2^{31143000004187} is an apocalyptic number.

31143000004187 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143000004187 is an equidigital number, since it uses as much as digits as its factorization.

31143000004187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 31143000004187 in words is "thirty-one trillion, one hundred forty-three billion, four thousand, one hundred eighty-seven".