31232131220093 has 2 divisors, whose sum is σ = 31232131220094. Its totient is φ = 31232131220092.

The previous prime is 31232131220047. The next prime is 31232131220111. The reversal of 31232131220093 is 39002213123213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16585077060484 + 14647054159609 = 4072478^2 + 3827147^2 .

It is a cyclic number.

It is not a de Polignac number, because 31232131220093 - 2⁸ = 31232131219837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31232131280093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616065610046 + 15616065610047.

It is an arithmetic number, because the mean of its divisors is an integer number (15616065610047).

Almost surely, 2^{31232131220093} is an apocalyptic number.

It is an amenable number.

31232131220093 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232131220093 is an equidigital number, since it uses as much as digits as its factorization.

31232131220093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 31232131220093 in words is "thirty-one trillion, two hundred thirty-two billion, one hundred thirty-one million, two hundred twenty thousand, ninety-three".