31403223403 has 16 divisors (see below), whose sum is σ = 32839206400. Its totient is φ = 30006456480.

The previous prime is 31403223349. The next prime is 31403223413. The reversal of 31403223403 is 30432230413.

It is a cyclic number.

It is not a de Polignac number, because 31403223403 - 2³³ = 22813288811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31403223413) 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, 327868 + ... + 412678.

It is an arithmetic number, because the mean of its divisors is an integer number (2052450400).

Almost surely, 2^31403223403 is an apocalyptic number.

31403223403 is a deficient number, since it is larger than the sum of its proper divisors (1435982997).

31403223403 is a wasteful number, since it uses less digits than its factorization.

31403223403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85042.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 31403223403 its reverse (30432230413), we get a palindrome (61835453816).

The spelling of 31403223403 in words is "thirty-one billion, four hundred three million, two hundred twenty-three thousand, four hundred three".