31301121133 has 2 divisors, whose sum is σ = 31301121134. Its totient is φ = 31301121132.

The previous prime is 31301121101. The next prime is 31301121149. The reversal of 31301121133 is 33112110313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24038331849 + 7262789284 = 155043^2 + 85222^2 .

It is a cyclic number.

It is not a de Polignac number, because 31301121133 - 2⁵ = 31301121101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31301121133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31301124133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650560566 + 15650560567.

It is an arithmetic number, because the mean of its divisors is an integer number (15650560567).

Almost surely, 2^31301121133 is an apocalyptic number.

It is an amenable number.

31301121133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301121133 is an equidigital number, since it uses as much as digits as its factorization.

31301121133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31301121133 its reverse (33112110313), we get a palindrome (64413231446).

The spelling of 31301121133 in words is "thirty-one billion, three hundred one million, one hundred twenty-one thousand, one hundred thirty-three".