31071434 has 8 divisors (see below), whose sum is σ = 46802880. Its totient is φ = 15470476.

The previous prime is 31071433. The next prime is 31071449. The reversal of 31071434 is 43417013.

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

It is not an unprimeable number, because it can be changed into a prime (31071433) 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 in 3 ways as a sum of consecutive naturals, for example, 32024 + ... + 32979.

It is an arithmetic number, because the mean of its divisors is an integer number (5850360).

Almost surely, 2^31071434 is an apocalyptic number.

31071434 is a deficient number, since it is larger than the sum of its proper divisors (15731446).

31071434 is a wasteful number, since it uses less digits than its factorization.

31071434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65244.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 31071434 is about 5574.1756341185. The cubic root of 31071434 is about 314.3791719504.

Adding to 31071434 its reverse (43417013), we get a palindrome (74488447).

The spelling of 31071434 in words is "thirty-one million, seventy-one thousand, four hundred thirty-four".