340521534 has 24 divisors (see below), whose sum is σ = 776628840. Its totient is φ = 107533008.

The previous prime is 340521529. The next prime is 340521541. The reversal of 340521534 is 435125043.

It is a junction number, because it is equal to n+sod(n) for n = 340521498 and 340521507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 497497 + ... + 498180.

It is an arithmetic number, because the mean of its divisors is an integer number (32359535).

Almost surely, 2^340521534 is an apocalyptic number.

340521534 is an abundant number, since it is smaller than the sum of its proper divisors (436107306).

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

340521534 is a wasteful number, since it uses less digits than its factorization.

340521534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995704 (or 995701 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 340521534 is about 18453.2255716988. The cubic root of 340521534 is about 698.3098913240.

Adding to 340521534 its reverse (435125043), we get a palindrome (775646577).

The spelling of 340521534 in words is "three hundred forty million, five hundred twenty-one thousand, five hundred thirty-four".