31123301201 has 2 divisors, whose sum is σ = 31123301202. Its totient is φ = 31123301200.

The previous prime is 31123301119. The next prime is 31123301243. The reversal of 31123301201 is 10210332113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26422827601 + 4700473600 = 162551^2 + 68560^2 .

It is a cyclic number.

It is not a de Polignac number, because 31123301201 - 2²² = 31119106897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31123301201.

It is not a weakly prime, because it can be changed into another prime (31123303201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561650600 + 15561650601.

It is an arithmetic number, because the mean of its divisors is an integer number (15561650601).

Almost surely, 2^31123301201 is an apocalyptic number.

It is an amenable number.

31123301201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31123301201 is an equidigital number, since it uses as much as digits as its factorization.

31123301201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31123301201 its reverse (10210332113), we get a palindrome (41333633314).

The spelling of 31123301201 in words is "thirty-one billion, one hundred twenty-three million, three hundred one thousand, two hundred one".