1431431221401 has 96 divisors (see below), whose sum is σ = 2278421376000. Its totient is φ = 887963627520.

The previous prime is 1431431221361. The next prime is 1431431221453. The reversal of 1431431221401 is 1041221341341.

It is a happy number.

1431431221401 is a `hidden beast` number, since 1 + 4 + 3 + 1 + 4 + 31 + 221 + 401 = 666.

It is not a de Polignac number, because 1431431221401 - 2⁹ = 1431431220889 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1431431221201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 259267521 + ... + 259273041.

It is an arithmetic number, because the mean of its divisors is an integer number (23733556000).

Almost surely, 2^{1431431221401} is an apocalyptic number.

It is an amenable number.

1431431221401 is a deficient number, since it is larger than the sum of its proper divisors (846990154599).

1431431221401 is a wasteful number, since it uses less digits than its factorization.

1431431221401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5936 (or 5913 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1431431221401 its reverse (1041221341341), we get a palindrome (2472652562742).

The spelling of 1431431221401 in words is "one trillion, four hundred thirty-one billion, four hundred thirty-one million, two hundred twenty-one thousand, four hundred one".