31040142205 has 16 divisors (see below), whose sum is σ = 39443402880. Its totient is φ = 23384279232.

The previous prime is 31040142191. The next prime is 31040142253. The reversal of 31040142205 is 50224104013.

It is a cyclic number.

It is not a de Polignac number, because 31040142205 - 2⁵ = 31040142173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 962394 + ... + 994123.

It is an arithmetic number, because the mean of its divisors is an integer number (2465212680).

Almost surely, 2^31040142205 is an apocalyptic number.

It is an amenable number.

31040142205 is a deficient number, since it is larger than the sum of its proper divisors (8403260675).

31040142205 is a wasteful number, since it uses less digits than its factorization.

31040142205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956708.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 31040142205 its reverse (50224104013), we get a palindrome (81264246218).

The spelling of 31040142205 in words is "thirty-one billion, forty million, one hundred forty-two thousand, two hundred five".