31434420403 has 4 divisors (see below), whose sum is σ = 31435016728. Its totient is φ = 31433824080.

The previous prime is 31434420383. The next prime is 31434420461. The reversal of 31434420403 is 30402443413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31434420403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31434420463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210501 + ... + 327382.

It is an arithmetic number, because the mean of its divisors is an integer number (7858754182).

Almost surely, 2^31434420403 is an apocalyptic number.

31434420403 is a deficient number, since it is larger than the sum of its proper divisors (596325).

31434420403 is an equidigital number, since it uses as much as digits as its factorization.

31434420403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596324.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 31434420403 its reverse (30402443413), we get a palindrome (61836863816).

The spelling of 31434420403 in words is "thirty-one billion, four hundred thirty-four million, four hundred twenty thousand, four hundred three".