1431421596 has 72 divisors (see below), whose sum is σ = 3956320368. Its totient is φ = 432768000.

The previous prime is 1431421529. The next prime is 1431421609. The reversal of 1431421596 is 6951241341.

It is a happy number.

1431421596 is a `hidden beast` number, since 1 + 43 + 1 + 4 + 21 + 596 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1431421596.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178636 + ... + 186476.

It is an arithmetic number, because the mean of its divisors is an integer number (54948894).

Almost surely, 2^1431421596 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 1431421596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1978160184).

1431421596 is an abundant number, since it is smaller than the sum of its proper divisors (2524898772).

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

1431421596 is a wasteful number, since it uses less digits than its factorization.

1431421596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8323 (or 8318 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1431421596 is about 37834.1326846539. The cubic root of 1431421596 is about 1126.9963817207.

The spelling of 1431421596 in words is "one billion, four hundred thirty-one million, four hundred twenty-one thousand, five hundred ninety-six".