31244325566761 has 2 divisors, whose sum is σ = 31244325566762. Its totient is φ = 31244325566760.

The previous prime is 31244325566747. The next prime is 31244325566767. The reversal of 31244325566761 is 16766552344213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30027451832361 + 1216873734400 = 5479731^2 + 1103120^2 .

It is a cyclic number.

It is not a de Polignac number, because 31244325566761 - 2¹¹ = 31244325564713 is a prime.

It is a super-2 number, since 2×31244325566761² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31244325566767) 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, 15622162783380 + 15622162783381.

It is an arithmetic number, because the mean of its divisors is an integer number (15622162783381).

Almost surely, 2^{31244325566761} is an apocalyptic number.

It is an amenable number.

31244325566761 is a deficient number, since it is larger than the sum of its proper divisors (1).

31244325566761 is an equidigital number, since it uses as much as digits as its factorization.

31244325566761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21772800, while the sum is 55.

The spelling of 31244325566761 in words is "thirty-one trillion, two hundred forty-four billion, three hundred twenty-five million, five hundred sixty-six thousand, seven hundred sixty-one".