31133242093 has 2 divisors, whose sum is σ = 31133242094. Its totient is φ = 31133242092.

The previous prime is 31133242081. The next prime is 31133242169. The reversal of 31133242093 is 39024233113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18540362569 + 12592879524 = 136163^2 + 112218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31133242093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31133249093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15566621046 + 15566621047.

It is an arithmetic number, because the mean of its divisors is an integer number (15566621047).

Almost surely, 2^31133242093 is an apocalyptic number.

It is an amenable number.

31133242093 is a deficient number, since it is larger than the sum of its proper divisors (1).

31133242093 is an equidigital number, since it uses as much as digits as its factorization.

31133242093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 31.

The spelling of 31133242093 in words is "thirty-one billion, one hundred thirty-three million, two hundred forty-two thousand, ninety-three".