31000044205 has 16 divisors (see below), whose sum is σ = 40123569024. Its totient is φ = 22856927040.

The previous prime is 31000044203. The next prime is 31000044241. The reversal of 31000044205 is 50244000013.

It is not a de Polignac number, because 31000044205 - 2¹ = 31000044203 is a prime.

It is a super-2 number, since 2×31000044205² (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 (31000044203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326511 + ... + 410620.

It is an arithmetic number, because the mean of its divisors is an integer number (2507723064).

Almost surely, 2^31000044205 is an apocalyptic number.

It is an amenable number.

31000044205 is a deficient number, since it is larger than the sum of its proper divisors (9123524819).

31000044205 is a wasteful number, since it uses less digits than its factorization.

31000044205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737796.

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 31000044205 its reverse (50244000013), we get a palindrome (81244044218).

The spelling of 31000044205 in words is "thirty-one billion, forty-four thousand, two hundred five".