31554340201 has 2 divisors, whose sum is σ = 31554340202. Its totient is φ = 31554340200.

The previous prime is 31554340183. The next prime is 31554340247. The reversal of 31554340201 is 10204345513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24704294976 + 6850045225 = 157176^2 + 82765^2 .

It is a cyclic number.

It is not a de Polignac number, because 31554340201 - 2⁷ = 31554340073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31554340201.

It is not a weakly prime, because it can be changed into another prime (31554341201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15777170100 + 15777170101.

It is an arithmetic number, because the mean of its divisors is an integer number (15777170101).

Almost surely, 2^31554340201 is an apocalyptic number.

It is an amenable number.

31554340201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31554340201 is an equidigital number, since it uses as much as digits as its factorization.

31554340201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 31554340201 its reverse (10204345513), we get a palindrome (41758685714).

The spelling of 31554340201 in words is "thirty-one billion, five hundred fifty-four million, three hundred forty thousand, two hundred one".