1431131648 has 40 divisors (see below), whose sum is σ = 2870374320. Its totient is φ = 712837120.

The previous prime is 1431131561. The next prime is 1431131677. The reversal of 1431131648 is 8461311341.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a house number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132533 + ... + 142923.

It is an arithmetic number, because the mean of its divisors is an integer number (71759358).

Almost surely, 2^1431131648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1431131648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1435187160).

1431131648 is an abundant number, since it is smaller than the sum of its proper divisors (1439242672).

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

1431131648 is an equidigital number, since it uses as much as digits as its factorization.

1431131648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10678 (or 10662 counting only the distinct ones).

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

The square root of 1431131648 is about 37830.3006596564. The cubic root of 1431131648 is about 1126.9202819856.

Adding to 1431131648 its reverse (8461311341), we get a palindrome (9892442989).

The spelling of 1431131648 in words is "one billion, four hundred thirty-one million, one hundred thirty-one thousand, six hundred forty-eight".