31020123022201 has 4 divisors (see below), whose sum is σ = 32844836141172. Its totient is φ = 29195409903232.

The previous prime is 31020123022169. The next prime is 31020123022237. The reversal of 31020123022201 is 10222032102013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25927649286400 + 5092473735801 = 5091920^2 + 2256651^2 .

It is a cyclic number.

It is not a de Polignac number, because 31020123022201 - 2⁵ = 31020123022169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31020123029201) 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, 912356559460 + ... + 912356559493.

It is an arithmetic number, because the mean of its divisors is an integer number (8211209035293).

Almost surely, 2^{31020123022201} is an apocalyptic number.

It is an amenable number.

31020123022201 is a deficient number, since it is larger than the sum of its proper divisors (1824713118971).

31020123022201 is a wasteful number, since it uses less digits than its factorization.

31020123022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824713118970.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31020123022201 its reverse (10222032102013), we get a palindrome (41242155124214).

The spelling of 31020123022201 in words is "thirty-one trillion, twenty billion, one hundred twenty-three million, twenty-two thousand, two hundred one".