312402135340 has 12 divisors (see below), whose sum is σ = 656044484256. Its totient is φ = 124960854128.

The previous prime is 312402135337. The next prime is 312402135427. The reversal of 312402135340 is 43531204213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 312402135299 and 312402135308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7810053364 + ... + 7810053403.

It is an arithmetic number, because the mean of its divisors is an integer number (54670373688).

Almost surely, 2^312402135340 is an apocalyptic number.

It is an amenable number.

312402135340 is an abundant number, since it is smaller than the sum of its proper divisors (343642348916).

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

312402135340 is a wasteful number, since it uses less digits than its factorization.

312402135340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15620106776 (or 15620106774 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 312402135340 its reverse (43531204213), we get a palindrome (355933339553).

The spelling of 312402135340 in words is "three hundred twelve billion, four hundred two million, one hundred thirty-five thousand, three hundred forty".