31423443043 has 8 divisors (see below), whose sum is σ = 32445479936. Its totient is φ = 30401929800.

The previous prime is 31423442993. The next prime is 31423443047. The reversal of 31423443043 is 34034432413.

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

It is a cyclic number.

It is not a de Polignac number, because 31423443043 - 2²⁵ = 31389888611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31423442996 and 31423443014.

It is not an unprimeable number, because it can be changed into a prime (31423443047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7071 + ... + 250792.

It is an arithmetic number, because the mean of its divisors is an integer number (4055684992).

Almost surely, 2^31423443043 is an apocalyptic number.

31423443043 is a deficient number, since it is larger than the sum of its proper divisors (1022036893).

31423443043 is a wasteful number, since it uses less digits than its factorization.

31423443043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261825.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 31423443043 its reverse (34034432413), we get a palindrome (65457875456).

The spelling of 31423443043 in words is "thirty-one billion, four hundred twenty-three million, four hundred forty-three thousand, forty-three".