31029270805 has 16 divisors (see below), whose sum is σ = 40103046144. Its totient is φ = 22911819840.

The previous prime is 31029270787. The next prime is 31029270827. The reversal of 31029270805 is 50807292013.

It is not a de Polignac number, because 31029270805 - 2⁵ = 31029270773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1306890 + ... + 1330420.

It is an arithmetic number, because the mean of its divisors is an integer number (2506440384).

Almost surely, 2^31029270805 is an apocalyptic number.

It is an amenable number.

31029270805 is a deficient number, since it is larger than the sum of its proper divisors (9073775339).

31029270805 is a wasteful number, since it uses less digits than its factorization.

31029270805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43836.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 31029270805 in words is "thirty-one billion, twenty-nine million, two hundred seventy thousand, eight hundred five".