31039145205 has 8 divisors (see below), whose sum is σ = 49662632352. Its totient is φ = 16554210768.

The previous prime is 31039145153. The next prime is 31039145209. The reversal of 31039145205 is 50254193013.

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

It is not a de Polignac number, because 31039145205 - 2⁸ = 31039144949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31039145209) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1034638159 + ... + 1034638188.

It is an arithmetic number, because the mean of its divisors is an integer number (6207829044).

Almost surely, 2^31039145205 is an apocalyptic number.

It is an amenable number.

31039145205 is a deficient number, since it is larger than the sum of its proper divisors (18623487147).

31039145205 is a wasteful number, since it uses less digits than its factorization.

31039145205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069276355.

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 31039145205 in words is "thirty-one billion, thirty-nine million, one hundred forty-five thousand, two hundred five".