8311249020 has 48 divisors (see below), whose sum is σ = 23340608928. Its totient is φ = 2209751040.

The previous prime is 8311248989. The next prime is 8311249027. The reversal of 8311249020 is 209421138.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8311249027) 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, 185301 + ... + 225740.

It is an arithmetic number, because the mean of its divisors is an integer number (486262686).

Almost surely, 2^8311249020 is an apocalyptic number.

It is an amenable number.

8311249020 is an abundant number, since it is smaller than the sum of its proper divisors (15029359908).

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

8311249020 is a wasteful number, since it uses less digits than its factorization.

8311249020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411390 (or 411388 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 8311249020 is about 91166.0519053008. The cubic root of 8311249020 is about 2025.6081307200.

The spelling of 8311249020 in words is "eight billion, three hundred eleven million, two hundred forty-nine thousand, twenty".