340427261 has 6 divisors (see below), whose sum is σ = 361630650. Its totient is φ = 320401856.

The previous prime is 340427249. The next prime is 340427273. The reversal of 340427261 is 162724043.

It is an interprime number because it is at equal distance from previous prime (340427249) and next prime (340427273).

It can be written as a sum of positive squares in 3 ways, for example, as 241802500 + 98624761 = 15550^2 + 9931^2 .

It is a de Polignac number, because none of the positive numbers 2^k-340427261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340427221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 588686 + ... + 589263.

It is an arithmetic number, because the mean of its divisors is an integer number (60271775).

Almost surely, 2^340427261 is an apocalyptic number.

It is an amenable number.

340427261 is a deficient number, since it is larger than the sum of its proper divisors (21203389).

340427261 is a wasteful number, since it uses less digits than its factorization.

340427261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177983 (or 1177966 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 340427261 is about 18450.6710176080. The cubic root of 340427261 is about 698.2454432761.

The spelling of 340427261 in words is "three hundred forty million, four hundred twenty-seven thousand, two hundred sixty-one".