31422120201 has 24 divisors (see below), whose sum is σ = 46129052424. Its totient is φ = 20608473600.

The previous prime is 31422120137. The next prime is 31422120217. The reversal of 31422120201 is 10202122413.

It is a happy number.

31422120201 is a `hidden beast` number, since 31 + 422 + 12 + 0 + 201 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8005775625 + 23416344576 = 89475^2 + 153024^2 .

It is not a de Polignac number, because 31422120201 - 2⁶ = 31422120137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31422120601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32625 + ... + 252801.

It is an arithmetic number, because the mean of its divisors is an integer number (1922043851).

Almost surely, 2^31422120201 is an apocalyptic number.

It is an amenable number.

31422120201 is a deficient number, since it is larger than the sum of its proper divisors (14706932223).

31422120201 is a wasteful number, since it uses less digits than its factorization.

31422120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220441 (or 220438 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 31422120201 its reverse (10202122413), we get a palindrome (41624242614).

The spelling of 31422120201 in words is "thirty-one billion, four hundred twenty-two million, one hundred twenty thousand, two hundred one".