400331231317 has 2 divisors, whose sum is σ = 400331231318. Its totient is φ = 400331231316.

The previous prime is 400331231243. The next prime is 400331231341. The reversal of 400331231317 is 713132133004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334351089361 + 65980141956 = 578231^2 + 256866^2 .

It is a cyclic number.

It is not a de Polignac number, because 400331231317 - 2¹¹ = 400331229269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400331201317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200165615658 + 200165615659.

It is an arithmetic number, because the mean of its divisors is an integer number (200165615659).

Almost surely, 2^400331231317 is an apocalyptic number.

It is an amenable number.

400331231317 is a deficient number, since it is larger than the sum of its proper divisors (1).

400331231317 is an equidigital number, since it uses as much as digits as its factorization.

400331231317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

The spelling of 400331231317 in words is "four hundred billion, three hundred thirty-one million, two hundred thirty-one thousand, three hundred seventeen".