31341430220389 has 2 divisors, whose sum is σ = 31341430220390. Its totient is φ = 31341430220388.

The previous prime is 31341430220383. The next prime is 31341430220423. The reversal of 31341430220389 is 98302203414313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17192284664164 + 14149145556225 = 4146358^2 + 3761535^2 .

It is a cyclic number.

It is not a de Polignac number, because 31341430220389 - 2⁵ = 31341430220357 is a prime.

It is a super-2 number, since 2×31341430220389² (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 (31341430220383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15670715110194 + 15670715110195.

It is an arithmetic number, because the mean of its divisors is an integer number (15670715110195).

Almost surely, 2^{31341430220389} is an apocalyptic number.

It is an amenable number.

31341430220389 is a deficient number, since it is larger than the sum of its proper divisors (1).

31341430220389 is an equidigital number, since it uses as much as digits as its factorization.

31341430220389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 31341430220389 in words is "thirty-one trillion, three hundred forty-one billion, four hundred thirty million, two hundred twenty thousand, three hundred eighty-nine".