31454443403 has 6 divisors (see below), whose sum is σ = 31666986204. Its totient is φ = 31243317704.

The previous prime is 31454443387. The next prime is 31454443421. The reversal of 31454443403 is 30434445413.

It is a happy number.

It is not a de Polignac number, because 31454443403 - 2⁴ = 31454443387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31454442403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 686201 + ... + 730602.

It is an arithmetic number, because the mean of its divisors is an integer number (5277831034).

Almost surely, 2^31454443403 is an apocalyptic number.

31454443403 is a deficient number, since it is larger than the sum of its proper divisors (212542801).

31454443403 is an equidigital number, since it uses as much as digits as its factorization.

31454443403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417101 (or 1416952 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 31454443403 its reverse (30434445413), we get a palindrome (61888888816).

The spelling of 31454443403 in words is "thirty-one billion, four hundred fifty-four million, four hundred forty-three thousand, four hundred three".