801231988 has 24 divisors (see below), whose sum is σ = 1411699520. Its totient is φ = 397897920.

The previous prime is 801231971. The next prime is 801232007. The reversal of 801231988 is 889132108.

It is a self number, because there is not a number n which added to its sum of digits gives 801231988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775120 + ... + 776152.

Almost surely, 2^801231988 is an apocalyptic number.

It is an amenable number.

801231988 is a deficient number, since it is larger than the sum of its proper divisors (610467532).

801231988 is a wasteful number, since it uses less digits than its factorization.

801231988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167 (or 2165 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 801231988 is about 28306.0415459315. The cubic root of 801231988 is about 928.7940541263.

It can be divided in two parts, 8012 and 31988, that added together give a square (40000 = 200²).

The spelling of 801231988 in words is "eight hundred one million, two hundred thirty-one thousand, nine hundred eighty-eight".