2340312681 has 16 divisors (see below), whose sum is σ = 3580995968. Its totient is φ = 1331769600.

The previous prime is 2340312563. The next prime is 2340312727. The reversal of 2340312681 is 1862130432.

It is not a de Polignac number, because 2340312681 - 2⁷ = 2340312553 is a prime.

It is a super-2 number, since 2×2340312681² = 10954126889698815522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2340312181) 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, 226150 + ... + 236271.

It is an arithmetic number, because the mean of its divisors is an integer number (223812248).

Almost surely, 2^2340312681 is an apocalyptic number.

2340312681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2340312681 is a deficient number, since it is larger than the sum of its proper divisors (1240683287).

2340312681 is a wasteful number, since it uses less digits than its factorization.

2340312681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462672.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2340312681 is about 48376.7783239025. The cubic root of 2340312681 is about 1327.6735255022.

The spelling of 2340312681 in words is "two billion, three hundred forty million, three hundred twelve thousand, six hundred eighty-one".