2311640870 has 128 divisors (see below), whose sum is σ = 5361472512. Its totient is φ = 702535680.

The previous prime is 2311640869. The next prime is 2311640873. The reversal of 2311640870 is 780461132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311640873) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4006022 + ... + 4006598.

It is an arithmetic number, because the mean of its divisors is an integer number (41886504).

Almost surely, 2^2311640870 is an apocalyptic number.

2311640870 is an abundant number, since it is smaller than the sum of its proper divisors (3049831642).

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

2311640870 is a wasteful number, since it uses less digits than its factorization.

2311640870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2311640870 is about 48079.5265159714. The cubic root of 2311640870 is about 1322.2293346316.

The spelling of 2311640870 in words is "two billion, three hundred eleven million, six hundred forty thousand, eight hundred seventy".