340810381 has 2 divisors, whose sum is σ = 340810382. Its totient is φ = 340810380.

The previous prime is 340810369. The next prime is 340810397. The reversal of 340810381 is 183018043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251507881 + 89302500 = 15859^2 + 9450^2 .

It is a cyclic number.

It is not a de Polignac number, because 340810381 - 2¹⁷ = 340679309 is a prime.

It is a super-2 number, since 2×340810381² = 232303431594730322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340010381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170405190 + 170405191.

It is an arithmetic number, because the mean of its divisors is an integer number (170405191).

Almost surely, 2^340810381 is an apocalyptic number.

It is an amenable number.

340810381 is a deficient number, since it is larger than the sum of its proper divisors (1).

340810381 is an equidigital number, since it uses as much as digits as its factorization.

340810381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 340810381 is about 18461.0503764006. The cubic root of 340810381 is about 698.5072823767.

The spelling of 340810381 in words is "three hundred forty million, eight hundred ten thousand, three hundred eighty-one".