31211001201 has 16 divisors (see below), whose sum is σ = 42744920768. Its totient is φ = 20242353600.

The previous prime is 31211001179. The next prime is 31211001259. The reversal of 31211001201 is 10210011213.

It is not a de Polignac number, because 31211001201 - 2⁵ = 31211001169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31211001901) 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, 1222911 + ... + 1248171.

It is an arithmetic number, because the mean of its divisors is an integer number (2671557548).

Almost surely, 2^31211001201 is an apocalyptic number.

It is an amenable number.

31211001201 is a deficient number, since it is larger than the sum of its proper divisors (11533919567).

31211001201 is a wasteful number, since it uses less digits than its factorization.

31211001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36432.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 31211001201 its reverse (10210011213), we get a palindrome (41421012414).

The spelling of 31211001201 in words is "thirty-one billion, two hundred eleven million, one thousand, two hundred one".