31212031201 has 8 divisors (see below), whose sum is σ = 33734306984. Its totient is φ = 28707091200.

The previous prime is 31212031189. The next prime is 31212031243. The reversal of 31212031201 is 10213021213.

It can be written as a sum of positive squares in 4 ways, for example, as 109181601 + 31102849600 = 10449^2 + 176360^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31212031201 - 2¹¹ = 31212029153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31212031001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4330200 + ... + 4337401.

It is an arithmetic number, because the mean of its divisors is an integer number (4216788373).

Almost surely, 2^31212031201 is an apocalyptic number.

It is an amenable number.

31212031201 is a deficient number, since it is larger than the sum of its proper divisors (2522275783).

31212031201 is a wasteful number, since it uses less digits than its factorization.

31212031201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8667891.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31212031201 its reverse (10213021213), we get a palindrome (41425052414).

The spelling of 31212031201 in words is "thirty-one billion, two hundred twelve million, thirty-one thousand, two hundred one".