31443203431401 has 16 divisors (see below), whose sum is σ = 42209050848000. Its totient is φ = 20819768542848.

The previous prime is 31443203431397. The next prime is 31443203431547. The reversal of 31443203431401 is 10413430234413.

It is not a de Polignac number, because 31443203431401 - 2² = 31443203431397 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31443203435401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2712480 + ... + 8381166.

It is an arithmetic number, because the mean of its divisors is an integer number (2638065678000).

Almost surely, 2^{31443203431401} is an apocalyptic number.

It is an amenable number.

31443203431401 is a deficient number, since it is larger than the sum of its proper divisors (10765847416599).

31443203431401 is a wasteful number, since it uses less digits than its factorization.

31443203431401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681248.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 31443203431401 its reverse (10413430234413), we get a palindrome (41856633665814).

The spelling of 31443203431401 in words is "thirty-one trillion, four hundred forty-three billion, two hundred three million, four hundred thirty-one thousand, four hundred one".