340402033 has 4 divisors (see below), whose sum is σ = 360425700. Its totient is φ = 320378368.

The previous prime is 340402019. The next prime is 340402063. The reversal of 340402033 is 330204043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 330204043 = 13 ⋅25400311.

It can be written as a sum of positive squares in 2 ways, for example, as 270043489 + 70358544 = 16433^2 + 8388^2 .

It is a cyclic number.

It is not a de Polignac number, because 340402033 - 2⁹ = 340401521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340402033.

It is not an unprimeable number, because it can be changed into a prime (340402063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10011808 + ... + 10011841.

It is an arithmetic number, because the mean of its divisors is an integer number (90106425).

Almost surely, 2^340402033 is an apocalyptic number.

It is an amenable number.

340402033 is a deficient number, since it is larger than the sum of its proper divisors (20023667).

340402033 is a wasteful number, since it uses less digits than its factorization.

340402033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20023666.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 340402033 is about 18449.9873441691. The cubic root of 340402033 is about 698.2281945877.

Adding to 340402033 its reverse (330204043), we get a palindrome (670606076).

The spelling of 340402033 in words is "three hundred forty million, four hundred two thousand, thirty-three".