400031040971 has 2 divisors, whose sum is σ = 400031040972. Its totient is φ = 400031040970.

The previous prime is 400031040953. The next prime is 400031040973. The reversal of 400031040971 is 179040130004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400031040971 - 2⁶ = 400031040907 is a prime.

It is a Sophie Germain prime.

Together with 400031040973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (400031040973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200015520485 + 200015520486.

It is an arithmetic number, because the mean of its divisors is an integer number (200015520486).

Almost surely, 2^400031040971 is an apocalyptic number.

400031040971 is a deficient number, since it is larger than the sum of its proper divisors (1).

400031040971 is an equidigital number, since it uses as much as digits as its factorization.

400031040971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 400031040971 its reverse (179040130004), we get a palindrome (579071170975).

The spelling of 400031040971 in words is "four hundred billion, thirty-one million, forty thousand, nine hundred seventy-one".