340478810311 has 4 divisors (see below), whose sum is σ = 341367789312. Its totient is φ = 339589831312.

The previous prime is 340478810293. The next prime is 340478810317. The reversal of 340478810311 is 113018874043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113018874043 = 1103 ⋅102464981.

It is a cyclic number.

It is not a de Polignac number, because 340478810311 - 2⁵ = 340478810279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340478810317) 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, 444488926 + ... + 444489691.

It is an arithmetic number, because the mean of its divisors is an integer number (85341947328).

Almost surely, 2^340478810311 is an apocalyptic number.

340478810311 is a deficient number, since it is larger than the sum of its proper divisors (888979001).

340478810311 is an equidigital number, since it uses as much as digits as its factorization.

340478810311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888979000.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 340478810311 in words is "three hundred forty billion, four hundred seventy-eight million, eight hundred ten thousand, three hundred eleven".