31311204201 has 24 divisors (see below), whose sum is σ = 45384768000. Its totient is φ = 20801541312.

The previous prime is 31311204193. The next prime is 31311204217. The reversal of 31311204201 is 10240211313.

It is not a de Polignac number, because 31311204201 - 2³ = 31311204193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31311204251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6747240 + ... + 6751878.

It is an arithmetic number, because the mean of its divisors is an integer number (1891032000).

Almost surely, 2^31311204201 is an apocalyptic number.

It is an amenable number.

31311204201 is a deficient number, since it is larger than the sum of its proper divisors (14073563799).

31311204201 is a wasteful number, since it uses less digits than its factorization.

31311204201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7093 (or 7090 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31311204201 its reverse (10240211313), we get a palindrome (41551415514).

The spelling of 31311204201 in words is "thirty-one billion, three hundred eleven million, two hundred four thousand, two hundred one".