340412312021381 has 2 divisors, whose sum is σ = 340412312021382. Its totient is φ = 340412312021380.

The previous prime is 340412312021357. The next prime is 340412312021437. The reversal of 340412312021381 is 183120213214043.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318116831788900 + 22295480232481 = 17835830^2 + 4721809^2 .

It is a cyclic number.

It is not a de Polignac number, because 340412312021381 - 2¹⁴ = 340412312004997 is a prime.

It is a super-2 number, since 2×340412312021381² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340412312051381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170206156010690 + 170206156010691.

It is an arithmetic number, because the mean of its divisors is an integer number (170206156010691).

Almost surely, 2^{340412312021381} is an apocalyptic number.

It is an amenable number.

340412312021381 is a deficient number, since it is larger than the sum of its proper divisors (1).

340412312021381 is an equidigital number, since it uses as much as digits as its factorization.

340412312021381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 340412312021381 in words is "three hundred forty trillion, four hundred twelve billion, three hundred twelve million, twenty-one thousand, three hundred eighty-one".