340401523 has 16 divisors (see below), whose sum is σ = 449362944. Its totient is φ = 249644160.

The previous prime is 340401521. The next prime is 340401559. The reversal of 340401523 is 325104043.

It is a cyclic number.

It is not a de Polignac number, because 340401523 - 2¹ = 340401521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340401494 and 340401503.

It is not an unprimeable number, because it can be changed into a prime (340401521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128715 + ... + 131332.

It is an arithmetic number, because the mean of its divisors is an integer number (28085184).

Almost surely, 2^340401523 is an apocalyptic number.

340401523 is a deficient number, since it is larger than the sum of its proper divisors (108961421).

340401523 is a wasteful number, since it uses less digits than its factorization.

340401523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260082.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 340401523 is about 18449.9735230162. The cubic root of 340401523 is about 698.2278458858.

Adding to 340401523 its reverse (325104043), we get a palindrome (665505566).

The spelling of 340401523 in words is "three hundred forty million, four hundred one thousand, five hundred twenty-three".