400031134697 has 2 divisors, whose sum is σ = 400031134698. Its totient is φ = 400031134696.

The previous prime is 400031134651. The next prime is 400031134729. The reversal of 400031134697 is 796431130004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351624094441 + 48407040256 = 592979^2 + 220016^2 .

It is a cyclic number.

It is not a de Polignac number, because 400031134697 - 2¹⁰ = 400031133673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400031134697.

It is not a weakly prime, because it can be changed into another prime (400031134637) 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, 200015567348 + 200015567349.

It is an arithmetic number, because the mean of its divisors is an integer number (200015567349).

Almost surely, 2^400031134697 is an apocalyptic number.

It is an amenable number.

400031134697 is a deficient number, since it is larger than the sum of its proper divisors (1).

400031134697 is an equidigital number, since it uses as much as digits as its factorization.

400031134697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 400031134697 in words is "four hundred billion, thirty-one million, one hundred thirty-four thousand, six hundred ninety-seven".