1431984020 has 48 divisors (see below), whose sum is σ = 3205574400. Its totient is φ = 535766400.

The previous prime is 1431984007. The next prime is 1431984041. The reversal of 1431984020 is 204891341.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6170 + ... + 53870.

It is an arithmetic number, because the mean of its divisors is an integer number (66782800).

Almost surely, 2^1431984020 is an apocalyptic number.

1431984020 is a gapful number since it is divisible by the number (10) 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 1431984020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1602787200).

1431984020 is an abundant number, since it is smaller than the sum of its proper divisors (1773590380).

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

1431984020 is a wasteful number, since it uses less digits than its factorization.

1431984020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47808 (or 47806 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1431984020 is about 37841.5647139491. The cubic root of 1431984020 is about 1127.1439661960.

The spelling of 1431984020 in words is "one billion, four hundred thirty-one million, nine hundred eighty-four thousand, twenty".