31135422833477 has 2 divisors, whose sum is σ = 31135422833478. Its totient is φ = 31135422833476.

The previous prime is 31135422833401. The next prime is 31135422833659. The reversal of 31135422833477 is 77433822453113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19324165397476 + 11811257436001 = 4395926^2 + 3436751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31135422833477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31135422833677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15567711416738 + 15567711416739.

It is an arithmetic number, because the mean of its divisors is an integer number (15567711416739).

Almost surely, 2^{31135422833477} is an apocalyptic number.

It is an amenable number.

31135422833477 is a deficient number, since it is larger than the sum of its proper divisors (1).

31135422833477 is an equidigital number, since it uses as much as digits as its factorization.

31135422833477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10160640, while the sum is 53.

The spelling of 31135422833477 in words is "thirty-one trillion, one hundred thirty-five billion, four hundred twenty-two million, eight hundred thirty-three thousand, four hundred seventy-seven".