340887394361 has 2 divisors, whose sum is σ = 340887394362. Its totient is φ = 340887394360.

The previous prime is 340887394327. The next prime is 340887394381. The reversal of 340887394361 is 163493788043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339707128336 + 1180266025 = 582844^2 + 34355^2 .

It is a cyclic number.

It is not a de Polignac number, because 340887394361 - 2³⁸ = 66009487417 is a prime.

It is a super-4 number, since 4×340887394361⁴ (a number of 47 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340887394297 and 340887394306.

It is not a weakly prime, because it can be changed into another prime (340887394321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170443697180 + 170443697181.

It is an arithmetic number, because the mean of its divisors is an integer number (170443697181).

Almost surely, 2^340887394361 is an apocalyptic number.

It is an amenable number.

340887394361 is a deficient number, since it is larger than the sum of its proper divisors (1).

340887394361 is an equidigital number, since it uses as much as digits as its factorization.

340887394361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 56.

The spelling of 340887394361 in words is "three hundred forty billion, eight hundred eighty-seven million, three hundred ninety-four thousand, three hundred sixty-one".