31823352887761 has 2 divisors, whose sum is σ = 31823352887762. Its totient is φ = 31823352887760.

The previous prime is 31823352887419. The next prime is 31823352887771. The reversal of 31823352887761 is 16778825332813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27267821859600 + 4555531028161 = 5221860^2 + 2134369^2 .

It is a cyclic number.

It is not a de Polignac number, because 31823352887761 - 2¹¹ = 31823352885713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31823352887693 and 31823352887702.

It is not a weakly prime, because it can be changed into another prime (31823352887771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15911676443880 + 15911676443881.

It is an arithmetic number, because the mean of its divisors is an integer number (15911676443881).

Almost surely, 2^{31823352887761} is an apocalyptic number.

It is an amenable number.

31823352887761 is a deficient number, since it is larger than the sum of its proper divisors (1).

31823352887761 is an equidigital number, since it uses as much as digits as its factorization.

31823352887761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81285120, while the sum is 64.

The spelling of 31823352887761 in words is "thirty-one trillion, eight hundred twenty-three billion, three hundred fifty-two million, eight hundred eighty-seven thousand, seven hundred sixty-one".