31020000201 has 6 divisors (see below), whose sum is σ = 44806666970. Its totient is φ = 20680000128.

The previous prime is 31020000199. The next prime is 31020000223. The reversal of 31020000201 is 10200002013.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27208172601 + 3811827600 = 164949^2 + 61740^2 .

It is not a de Polignac number, because 31020000201 - 2¹ = 31020000199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 3446666689 = 31020000201 / (3 + 1 + 0 + 2 + 0 + 0 + 0 + 0 + 2 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31020000251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1723333336 + ... + 1723333353.

Almost surely, 2^31020000201 is an apocalyptic number.

It is an amenable number.

31020000201 is a deficient number, since it is larger than the sum of its proper divisors (13786666769).

31020000201 is a wasteful number, since it uses less digits than its factorization.

31020000201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446666695 (or 3446666692 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 31020000201 its reverse (10200002013), we get a palindrome (41220002214).

It can be divided in two parts, 3 and 1020000201, that multiplied together give a palindrome (3060000603).

The spelling of 31020000201 in words is "thirty-one billion, twenty million, two hundred one", and thus it is an aban number.