1231950384 has 200 divisors, whose sum is σ = 4099692960. Its totient is φ = 349857792.

The previous prime is 1231950359. The next prime is 1231950397. The reversal of 1231950384 is 4830591321.

It is a super-3 number, since 3×1231950384³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2077192 + ... + 2077784.

Almost surely, 2^1231950384 is an apocalyptic number.

1231950384 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231950384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2049846480).

1231950384 is an abundant number, since it is smaller than the sum of its proper divisors (2867742576).

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

1231950384 is a wasteful number, since it uses less digits than its factorization.

1231950384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1231950384 is about 35099.1507589571. The cubic root of 1231950384 is about 1072.0072909209.

The spelling of 1231950384 in words is "one billion, two hundred thirty-one million, nine hundred fifty thousand, three hundred eighty-four".