340312012212340 has 48 divisors (see below), whose sum is σ = 816928375536000. Its totient is φ = 116652754726272.

The previous prime is 340312012212241. The next prime is 340312012212343. The reversal of 340312012212340 is 43212210213043.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 340312012212299 and 340312012212308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340312012212343) 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, 266542750 + ... + 267816469.

It is an arithmetic number, because the mean of its divisors is an integer number (17019341157000).

Almost surely, 2^{340312012212340} is an apocalyptic number.

It is an amenable number.

340312012212340 is an abundant number, since it is smaller than the sum of its proper divisors (476616363323660).

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

340312012212340 is a wasteful number, since it uses less digits than its factorization.

340312012212340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534363784 (or 534363782 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 340312012212340 its reverse (43212210213043), we get a palindrome (383524222425383).

The spelling of 340312012212340 in words is "three hundred forty trillion, three hundred twelve billion, twelve million, two hundred twelve thousand, three hundred forty".