4312657820 has 12 divisors (see below), whose sum is σ = 9056581464. Its totient is φ = 1725063120.

The previous prime is 4312657807. The next prime is 4312657823. The reversal of 4312657820 is 287562134.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4312657823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107816426 + ... + 107816465.

It is an arithmetic number, because the mean of its divisors is an integer number (754715122).

Almost surely, 2^4312657820 is an apocalyptic number.

It is an amenable number.

4312657820 is an abundant number, since it is smaller than the sum of its proper divisors (4743923644).

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

4312657820 is a wasteful number, since it uses less digits than its factorization.

4312657820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215632900 (or 215632898 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 4312657820 is about 65670.8292927689. The cubic root of 4312657820 is about 1627.7273734694.

The spelling of 4312657820 in words is "four billion, three hundred twelve million, six hundred fifty-seven thousand, eight hundred twenty".