1431056540 has 12 divisors (see below), whose sum is σ = 3005218776. Its totient is φ = 572422608.

The previous prime is 1431056489. The next prime is 1431056563. The reversal of 1431056540 is 456501341.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35776394 + ... + 35776433.

It is an arithmetic number, because the mean of its divisors is an integer number (250434898).

Almost surely, 2^1431056540 is an apocalyptic number.

1431056540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1431056540 is an abundant number, since it is smaller than the sum of its proper divisors (1574162236).

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

1431056540 is a wasteful number, since it uses less digits than its factorization.

1431056540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71552836 (or 71552834 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1431056540 is about 37829.3079503181. The cubic root of 1431056540 is about 1126.9005674682.

Adding to 1431056540 its reverse (456501341), we get a palindrome (1887557881).

The spelling of 1431056540 in words is "one billion, four hundred thirty-one million, fifty-six thousand, five hundred forty".