340312588398 has 12 divisors (see below), whose sum is σ = 737343941568. Its totient is φ = 113437529460.

The previous prime is 340312588391. The next prime is 340312588459. The reversal of 340312588398 is 893885213043.

340312588398 is a `hidden beast` number, since 3 + 40 + 3 + 12 + 588 + 3 + 9 + 8 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340312588391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9453127438 + ... + 9453127473.

It is an arithmetic number, because the mean of its divisors is an integer number (61445328464).

Almost surely, 2^340312588398 is an apocalyptic number.

340312588398 is an abundant number, since it is smaller than the sum of its proper divisors (397031353170).

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

340312588398 is a wasteful number, since it uses less digits than its factorization.

340312588398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18906254919 (or 18906254916 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 340312588398 in words is "three hundred forty billion, three hundred twelve million, five hundred eighty-eight thousand, three hundred ninety-eight".