31244209147061 has 2 divisors, whose sum is σ = 31244209147062. Its totient is φ = 31244209147060.

The previous prime is 31244209147033. The next prime is 31244209147091. The reversal of 31244209147061 is 16074190244213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25341709743025 + 5902499404036 = 5034055^2 + 2429506^2 .

It is an emirp because it is prime and its reverse (16074190244213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31244209147061 - 2²² = 31244204952757 is a prime.

It is a super-2 number, since 2×31244209147061² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31244209147091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15622104573530 + 15622104573531.

It is an arithmetic number, because the mean of its divisors is an integer number (15622104573531).

Almost surely, 2^{31244209147061} is an apocalyptic number.

It is an amenable number.

31244209147061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31244209147061 is an equidigital number, since it uses as much as digits as its factorization.

31244209147061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 31244209147061 in words is "thirty-one trillion, two hundred forty-four billion, two hundred nine million, one hundred forty-seven thousand, sixty-one".