31211457201 has 12 divisors (see below), whose sum is σ = 45090534580. Its totient is φ = 20804260320.

The previous prime is 31211457157. The next prime is 31211457239. The reversal of 31211457201 is 10275411213.

31211457201 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 1 + 457 + 201 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26251776576 + 4959680625 = 162024^2 + 70425^2 .

It is not a de Polignac number, because 31211457201 - 2¹¹ = 31211455153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31211457001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222310 + ... + 334431.

Almost surely, 2^31211457201 is an apocalyptic number.

It is an amenable number.

31211457201 is a deficient number, since it is larger than the sum of its proper divisors (13879077379).

31211457201 is a wasteful number, since it uses less digits than its factorization.

31211457201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562976 (or 562973 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

Adding to 31211457201 its reverse (10275411213), we get a palindrome (41486868414).

The spelling of 31211457201 in words is "thirty-one billion, two hundred eleven million, four hundred fifty-seven thousand, two hundred one".