31403134 has 8 divisors (see below), whose sum is σ = 53833968. Its totient is φ = 13458480.

The previous prime is 31403129. The next prime is 31403137. The reversal of 31403134 is 43130413.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31403137) 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, 1121527 + ... + 1121554.

It is an arithmetic number, because the mean of its divisors is an integer number (6729246).

Almost surely, 2^31403134 is an apocalyptic number.

31403134 is a deficient number, since it is larger than the sum of its proper divisors (22430834).

31403134 is a wasteful number, since it uses less digits than its factorization.

31403134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243090.

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

The square root of 31403134 is about 5603.8499266130. The cubic root of 31403134 is about 315.4939223582.

Adding to 31403134 its reverse (43130413), we get a palindrome (74533547).

The spelling of 31403134 in words is "thirty-one million, four hundred three thousand, one hundred thirty-four".