1431040140 has 36 divisors (see below), whose sum is σ = 4340822304. Its totient is φ = 381610656.

The previous prime is 1431040133. The next prime is 1431040159. The reversal of 1431040140 is 410401341.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3974932 + ... + 3975291.

Almost surely, 2^1431040140 is an apocalyptic number.

1431040140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1431040140 is an abundant number, since it is smaller than the sum of its proper divisors (2909782164).

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

1431040140 is a wasteful number, since it uses less digits than its factorization.

1431040140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7950238 (or 7950233 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1431040140 is about 37829.0911865458. The cubic root of 1431040140 is about 1126.8962626675.

Adding to 1431040140 its reverse (410401341), we get a palindrome (1841441481).

The spelling of 1431040140 in words is "one billion, four hundred thirty-one million, forty thousand, one hundred forty".