1231845888 has 240 divisors, whose sum is σ = 4114424160. Its totient is φ = 324624384.

The previous prime is 1231845859. The next prime is 1231845893. The reversal of 1231845888 is 8885481321.

It is a super-3 number, since 3×1231845888³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 977803 + ... + 979061.

It is an arithmetic number, because the mean of its divisors is an integer number (17143434).

Almost surely, 2^1231845888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231845888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2057212080).

1231845888 is an abundant number, since it is smaller than the sum of its proper divisors (2882578272).

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

1231845888 is a wasteful number, since it uses less digits than its factorization.

1231845888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1284 counting only the distinct ones).

The product of its digits is 491520, while the sum is 48.

The square root of 1231845888 is about 35097.6621443651. The cubic root of 1231845888 is about 1071.9769802735.

The spelling of 1231845888 in words is "one billion, two hundred thirty-one million, eight hundred forty-five thousand, eight hundred eighty-eight".