340292881 has 2 divisors, whose sum is σ = 340292882. Its totient is φ = 340292880.

The previous prime is 340292861. The next prime is 340292899. The reversal of 340292881 is 188292043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337052881 + 3240000 = 18359^2 + 1800^2 .

It is a cyclic number.

It is not a de Polignac number, because 340292881 - 2²³ = 331904273 is a prime.

It is a super-2 number, since 2×340292881² = 231598489718560322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340292881.

It is not a weakly prime, because it can be changed into another prime (340292861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170146440 + 170146441.

It is an arithmetic number, because the mean of its divisors is an integer number (170146441).

Almost surely, 2^340292881 is an apocalyptic number.

It is an amenable number.

340292881 is a deficient number, since it is larger than the sum of its proper divisors (1).

340292881 is an equidigital number, since it uses as much as digits as its factorization.

340292881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 340292881 is about 18447.0290561922. The cubic root of 340292881 is about 698.1535562248.

The spelling of 340292881 in words is "three hundred forty million, two hundred ninety-two thousand, eight hundred eighty-one".