1431401240221 has 8 divisors (see below), whose sum is σ = 1444366623744. Its totient is φ = 1418492848080.

The previous prime is 1431401240197. The next prime is 1431401240257. The reversal of 1431401240221 is 1220421041341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1431401240221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431401240281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14197386 + ... + 14297851.

It is an arithmetic number, because the mean of its divisors is an integer number (180545827968).

Almost surely, 2^{1431401240221} is an apocalyptic number.

It is an amenable number.

1431401240221 is a deficient number, since it is larger than the sum of its proper divisors (12965383523).

1431401240221 is a wasteful number, since it uses less digits than its factorization.

1431401240221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28495691.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1431401240221 its reverse (1220421041341), we get a palindrome (2651822281562).

The spelling of 1431401240221 in words is "one trillion, four hundred thirty-one billion, four hundred one million, two hundred forty thousand, two hundred twenty-one".