340426481 has 2 divisors, whose sum is σ = 340426482. Its totient is φ = 340426480.

The previous prime is 340426423. The next prime is 340426483. The reversal of 340426481 is 184624043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335475856 + 4950625 = 18316^2 + 2225^2 .

It is a cyclic number.

It is not a de Polignac number, because 340426481 - 2²⁶ = 273317617 is a prime.

It is a super-2 number, since 2×340426481² = 231780377932086722, which contains 22 as substring.

Together with 340426483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340426483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170213240 + 170213241.

It is an arithmetic number, because the mean of its divisors is an integer number (170213241).

Almost surely, 2^340426481 is an apocalyptic number.

It is an amenable number.

340426481 is a deficient number, since it is larger than the sum of its proper divisors (1).

340426481 is an equidigital number, since it uses as much as digits as its factorization.

340426481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 340426481 is about 18450.6498801533. The cubic root of 340426481 is about 698.2449099934.

The spelling of 340426481 in words is "three hundred forty million, four hundred twenty-six thousand, four hundred eighty-one".