31553212201 has 16 divisors (see below), whose sum is σ = 37969891200. Its totient is φ = 25614638208.

The previous prime is 31553212139. The next prime is 31553212211. The reversal of 31553212201 is 10221235513.

It is a cyclic number.

It is not a de Polignac number, because 31553212201 - 2¹¹ = 31553210153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31553212211) 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, 444855 + ... + 510883.

It is an arithmetic number, because the mean of its divisors is an integer number (2373118200).

Almost surely, 2^31553212201 is an apocalyptic number.

It is an amenable number.

31553212201 is a deficient number, since it is larger than the sum of its proper divisors (6416678999).

31553212201 is a wasteful number, since it uses less digits than its factorization.

31553212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69648.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 31553212201 its reverse (10221235513), we get a palindrome (41774447714).

The spelling of 31553212201 in words is "thirty-one billion, five hundred fifty-three million, two hundred twelve thousand, two hundred one".