1431404420 has 24 divisors (see below), whose sum is σ = 3182770584. Its totient is φ = 538881536.

The previous prime is 1431404371. The next prime is 1431404431. The reversal of 1431404420 is 244041341.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14032516 + 1417371904 = 3746^2 + 37648^2 .

It is a super-2 number, since 2×1431404420² = 4097837227191072800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2104667 + ... + 2105346.

It is an arithmetic number, because the mean of its divisors is an integer number (132615441).

Almost surely, 2^1431404420 is an apocalyptic number.

1431404420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1431404420 is an abundant number, since it is smaller than the sum of its proper divisors (1751366164).

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

1431404420 is a wasteful number, since it uses less digits than its factorization.

1431404420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210039 (or 4210037 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1431404420 is about 37833.9056931742. The cubic root of 1431404420 is about 1126.9918739951.

Adding to 1431404420 its reverse (244041341), we get a palindrome (1675445761).

The spelling of 1431404420 in words is "one billion, four hundred thirty-one million, four hundred four thousand, four hundred twenty".