31134403 has 2 divisors, whose sum is σ = 31134404. Its totient is φ = 31134402.

The previous prime is 31134401. The next prime is 31134409. The reversal of 31134403 is 30443113.

It is a weak prime.

It is an emirp because it is prime and its reverse (30443113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31134403 - 2¹ = 31134401 is a prime.

Together with 31134401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31134401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15567201 + 15567202.

It is an arithmetic number, because the mean of its divisors is an integer number (15567202).

Almost surely, 2^31134403 is an apocalyptic number.

31134403 is a deficient number, since it is larger than the sum of its proper divisors (1).

31134403 is an equidigital number, since it uses as much as digits as its factorization.

31134403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 31134403 is about 5579.8210544784. The cubic root of 31134403 is about 314.5914010162.

Adding to 31134403 its reverse (30443113), we get a palindrome (61577516).

The spelling of 31134403 in words is "thirty-one million, one hundred thirty-four thousand, four hundred three".