201431002397 has 2 divisors, whose sum is σ = 201431002398. Its totient is φ = 201431002396.

The previous prime is 201431002373. The next prime is 201431002411. The reversal of 201431002397 is 793200134102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155534795641 + 45896206756 = 394379^2 + 214234^2 .

It is a cyclic number.

It is not a de Polignac number, because 201431002397 - 2¹⁴ = 201430986013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201431001397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100715501198 + 100715501199.

It is an arithmetic number, because the mean of its divisors is an integer number (100715501199).

Almost surely, 2^201431002397 is an apocalyptic number.

It is an amenable number.

201431002397 is a deficient number, since it is larger than the sum of its proper divisors (1).

201431002397 is an equidigital number, since it uses as much as digits as its factorization.

201431002397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

Adding to 201431002397 its reverse (793200134102), we get a palindrome (994631136499).

The spelling of 201431002397 in words is "two hundred one billion, four hundred thirty-one million, two thousand, three hundred ninety-seven".