340521143406 has 32 divisors (see below), whose sum is σ = 681713169408. Its totient is φ = 113395291680.

The previous prime is 340521143393. The next prime is 340521143477. The reversal of 340521143406 is 604341125043.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38766091 + ... + 38774873.

It is an arithmetic number, because the mean of its divisors is an integer number (21303536544).

Almost surely, 2^340521143406 is an apocalyptic number.

340521143406 is an abundant number, since it is smaller than the sum of its proper divisors (341192026002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340521143406 is a wasteful number, since it uses less digits than its factorization.

340521143406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14416.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 340521143406 its reverse (604341125043), we get a palindrome (944862268449).

The spelling of 340521143406 in words is "three hundred forty billion, five hundred twenty-one million, one hundred forty-three thousand, four hundred six".