31232030201 has 4 divisors (see below), whose sum is σ = 31232616804. Its totient is φ = 31231443600.

The previous prime is 31232030191. The next prime is 31232030227. The reversal of 31232030201 is 10203023213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10203023213 = 157 ⋅64987409.

It can be written as a sum of positive squares in 2 ways, for example, as 4874832400 + 26357197801 = 69820^2 + 162349^2 .

It is a cyclic number.

It is not a de Polignac number, because 31232030201 - 2¹⁰ = 31232029177 is a prime.

It is a super-2 number, since 2×31232030201² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31232030201.

It is not an unprimeable number, because it can be changed into a prime (31232030251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204470 + ... + 322911.

It is an arithmetic number, because the mean of its divisors is an integer number (7808154201).

Almost surely, 2^31232030201 is an apocalyptic number.

It is an amenable number.

31232030201 is a deficient number, since it is larger than the sum of its proper divisors (586603).

31232030201 is an equidigital number, since it uses as much as digits as its factorization.

31232030201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586602.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31232030201 its reverse (10203023213), we get a palindrome (41435053414).

It can be divided in two parts, 31 and 232030201, that added together give a palindrome (232030232).

The spelling of 31232030201 in words is "thirty-one billion, two hundred thirty-two million, thirty thousand, two hundred one".