1431241140 has 96 divisors (see below), whose sum is σ = 4587206400. Its totient is φ = 326624256.

The previous prime is 1431241121. The next prime is 1431241151. The reversal of 1431241140 is 411421341.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305536 + ... + 310184.

It is an arithmetic number, because the mean of its divisors is an integer number (47783400).

Almost surely, 2^1431241140 is an apocalyptic number.

1431241140 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 1431241140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2293603200).

1431241140 is an abundant number, since it is smaller than the sum of its proper divisors (3155965260).

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

1431241140 is a wasteful number, since it uses less digits than its factorization.

1431241140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401 (or 5399 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1431241140 is about 37831.7477788167. The cubic root of 1431241140 is about 1126.9490204573.

Adding to 1431241140 its reverse (411421341), we get a palindrome (1842662481).

The spelling of 1431241140 in words is "one billion, four hundred thirty-one million, two hundred forty-one thousand, one hundred forty".