31034020205 has 8 divisors (see below), whose sum is σ = 37251124992. Its totient is φ = 24820349008.

The previous prime is 31034020189. The next prime is 31034020207. The reversal of 31034020205 is 50202043013.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31034020205 - 2⁴ = 31034020189 is a prime.

It is a super-2 number, since 2×31034020205² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31034020207) 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, 838469 + ... + 874698.

It is an arithmetic number, because the mean of its divisors is an integer number (4656390624).

Almost surely, 2^31034020205 is an apocalyptic number.

It is an amenable number.

31034020205 is a deficient number, since it is larger than the sum of its proper divisors (6217104787).

31034020205 is a wasteful number, since it uses less digits than its factorization.

31034020205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716795.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 31034020205 its reverse (50202043013), we get a palindrome (81236063218).

The spelling of 31034020205 in words is "thirty-one billion, thirty-four million, twenty thousand, two hundred five".