1431026406 has 64 divisors (see below), whose sum is σ = 3242937600. Its totient is φ = 467667648.

The previous prime is 1431026383. The next prime is 1431026407. The reversal of 1431026406 is 6046201341.

1431026406 is a `hidden beast` number, since 1 + 4 + 3 + 10 + 2 + 640 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1431026406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431026407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 621850 + ... + 624146.

It is an arithmetic number, because the mean of its divisors is an integer number (50670900).

Almost surely, 2^1431026406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1431026406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1621468800).

1431026406 is an abundant number, since it is smaller than the sum of its proper divisors (1811911194).

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

1431026406 is a wasteful number, since it uses less digits than its factorization.

1431026406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530 (or 2524 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1431026406 is about 37828.9096591483. The cubic root of 1431026406 is about 1126.8926576340.

Adding to 1431026406 its reverse (6046201341), we get a palindrome (7477227747).

The spelling of 1431026406 in words is "one billion, four hundred thirty-one million, twenty-six thousand, four hundred six".