31423201443 has 12 divisors (see below), whose sum is σ = 45430839168. Its totient is φ = 20929522320.

The previous prime is 31423201399. The next prime is 31423201457. The reversal of 31423201443 is 34410232413.

31423201443 is a `hidden beast` number, since 3 + 14 + 2 + 3 + 201 + 443 = 666.

It is not a de Polignac number, because 31423201443 - 2⁶ = 31423201379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31423201643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1596228 + ... + 1615793.

It is an arithmetic number, because the mean of its divisors is an integer number (3785903264).

Almost surely, 2^31423201443 is an apocalyptic number.

31423201443 is a deficient number, since it is larger than the sum of its proper divisors (14007637725).

31423201443 is a wasteful number, since it uses less digits than its factorization.

31423201443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213114 (or 3213111 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 31423201443 its reverse (34410232413), we get a palindrome (65833433856).

The spelling of 31423201443 in words is "thirty-one billion, four hundred twenty-three million, two hundred one thousand, four hundred forty-three".