31143311201 has 2 divisors, whose sum is σ = 31143311202. Its totient is φ = 31143311200.

The previous prime is 31143311183. The next prime is 31143311249. The reversal of 31143311201 is 10211334113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30924981025 + 218330176 = 175855^2 + 14776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31143311201 is a prime.

It is not a weakly prime, because it can be changed into another prime (31143311501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571655600 + 15571655601.

It is an arithmetic number, because the mean of its divisors is an integer number (15571655601).

Almost surely, 2^31143311201 is an apocalyptic number.

It is an amenable number.

31143311201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143311201 is an equidigital number, since it uses as much as digits as its factorization.

31143311201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31143311201 its reverse (10211334113), we get a palindrome (41354645314).

The spelling of 31143311201 in words is "thirty-one billion, one hundred forty-three million, three hundred eleven thousand, two hundred one".