340031542621 has 2 divisors, whose sum is σ = 340031542622. Its totient is φ = 340031542620.

The previous prime is 340031542577. The next prime is 340031542657. The reversal of 340031542621 is 126245130043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328087238521 + 11944304100 = 572789^2 + 109290^2 .

It is a cyclic number.

It is not a de Polignac number, because 340031542621 - 2²⁹ = 339494671709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340031542681) 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, 170015771310 + 170015771311.

It is an arithmetic number, because the mean of its divisors is an integer number (170015771311).

Almost surely, 2^340031542621 is an apocalyptic number.

It is an amenable number.

340031542621 is a deficient number, since it is larger than the sum of its proper divisors (1).

340031542621 is an equidigital number, since it uses as much as digits as its factorization.

340031542621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 340031542621 its reverse (126245130043), we get a palindrome (466276672664).

The spelling of 340031542621 in words is "three hundred forty billion, thirty-one million, five hundred forty-two thousand, six hundred twenty-one".