1230031188 has 18 divisors (see below), whose sum is σ = 3109245594. Its totient is φ = 410010384.

The previous prime is 1230031183. The next prime is 1230031189. The reversal of 1230031188 is 8811300321.

It can be written as a sum of positive squares in only one way, i.e., 721889424 + 508141764 = 26868^2 + 22542^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230031183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17083731 + ... + 17083802.

Almost surely, 2^1230031188 is an apocalyptic number.

1230031188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1230031188 is an abundant number, since it is smaller than the sum of its proper divisors (1879214406).

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

1230031188 is a wasteful number, since it uses less digits than its factorization.

1230031188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34167543 (or 34167538 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1230031188 is about 35071.8004670419. The cubic root of 1230031188 is about 1071.4503254707.

The spelling of 1230031188 in words is "one billion, two hundred thirty million, thirty-one thousand, one hundred eighty-eight".