1431232040 has 192 divisors, whose sum is σ = 4084819200. Its totient is φ = 441188352.

The previous prime is 1431232009. The next prime is 1431232111. The reversal of 1431232040 is 402321341.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1860776 + ... + 1861544.

It is an arithmetic number, because the mean of its divisors is an integer number (21275100).

Almost surely, 2^1431232040 is an apocalyptic number.

1431232040 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 1431232040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2042409600).

1431232040 is an abundant number, since it is smaller than the sum of its proper divisors (2653587160).

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

1431232040 is a wasteful number, since it uses less digits than its factorization.

1431232040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1431232040 is about 37831.6275092680. The cubic root of 1431232040 is about 1126.9466320273.

Adding to 1431232040 its reverse (402321341), we get a palindrome (1833553381).

The spelling of 1431232040 in words is "one billion, four hundred thirty-one million, two hundred thirty-two thousand, forty".