31994646077101 has 2 divisors, whose sum is σ = 31994646077102. Its totient is φ = 31994646077100.

The previous prime is 31994646077089. The next prime is 31994646077161. The reversal of 31994646077101 is 10177064649913.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27479339821476 + 4515306255625 = 5242074^2 + 2124925^2 .

It is a cyclic number.

It is not a de Polignac number, because 31994646077101 - 2¹³ = 31994646068909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31994646077161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15997323038550 + 15997323038551.

It is an arithmetic number, because the mean of its divisors is an integer number (15997323038551).

Almost surely, 2^{31994646077101} is an apocalyptic number.

It is an amenable number.

31994646077101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31994646077101 is an equidigital number, since it uses as much as digits as its factorization.

31994646077101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 31994646077101 in words is "thirty-one trillion, nine hundred ninety-four billion, six hundred forty-six million, seventy-seven thousand, one hundred one".