31331300047 has 2 divisors, whose sum is σ = 31331300048. Its totient is φ = 31331300046.

The previous prime is 31331300027. The next prime is 31331300059. The reversal of 31331300047 is 74000313313.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31331300047 - 2³¹ = 29183816399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31331299994 and 31331300030.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31331300017) 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, 15665650023 + 15665650024.

It is an arithmetic number, because the mean of its divisors is an integer number (15665650024).

Almost surely, 2^31331300047 is an apocalyptic number.

31331300047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31331300047 is an equidigital number, since it uses as much as digits as its factorization.

31331300047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 25.

The spelling of 31331300047 in words is "thirty-one billion, three hundred thirty-one million, three hundred thousand, forty-seven".