1431223400 has 96 divisors (see below), whose sum is σ = 3399157440. Its totient is φ = 560309760.

The previous prime is 1431223397. The next prime is 1431223411. The reversal of 1431223400 is 43221341.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 2437907 + ... + 2438493.

It is an arithmetic number, because the mean of its divisors is an integer number (35407890).

Almost surely, 2^1431223400 is an apocalyptic number.

1431223400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1431223400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1699578720).

1431223400 is an abundant number, since it is smaller than the sum of its proper divisors (1967934040).

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

1431223400 is a wasteful number, since it uses less digits than its factorization.

1431223400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1431223400 is about 37831.5133189250. The cubic root of 1431223400 is about 1126.9443643218.

Adding to 1431223400 its reverse (43221341), we get a palindrome (1474444741).

The spelling of 1431223400 in words is "one billion, four hundred thirty-one million, two hundred twenty-three thousand, four hundred".