340323076981 has 2 divisors, whose sum is σ = 340323076982. Its totient is φ = 340323076980.

The previous prime is 340323076949. The next prime is 340323076999. The reversal of 340323076981 is 189670323043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187878902500 + 152444174481 = 433450^2 + 390441^2 .

It is a cyclic number.

It is not a de Polignac number, because 340323076981 - 2⁵ = 340323076949 is a prime.

It is a super-2 number, since 2×340323076981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340323076921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170161538490 + 170161538491.

It is an arithmetic number, because the mean of its divisors is an integer number (170161538491).

Almost surely, 2^340323076981 is an apocalyptic number.

It is an amenable number.

340323076981 is a deficient number, since it is larger than the sum of its proper divisors (1).

340323076981 is an equidigital number, since it uses as much as digits as its factorization.

340323076981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 340323076981 in words is "three hundred forty billion, three hundred twenty-three million, seventy-six thousand, nine hundred eighty-one".