31023123201001 has 2 divisors, whose sum is σ = 31023123201002. Its totient is φ = 31023123201000.

The previous prime is 31023123200981. The next prime is 31023123201011. The reversal of 31023123201001 is 10010232132013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20672489983401 + 10350633217600 = 4546701^2 + 3217240^2 .

It is a cyclic number.

It is not a de Polignac number, because 31023123201001 - 2³⁵ = 30988763462633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31023123201001.

It is not a weakly prime, because it can be changed into another prime (31023123201011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511561600500 + 15511561600501.

It is an arithmetic number, because the mean of its divisors is an integer number (15511561600501).

Almost surely, 2^{31023123201001} is an apocalyptic number.

It is an amenable number.

31023123201001 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023123201001 is an equidigital number, since it uses as much as digits as its factorization.

31023123201001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31023123201001 its reverse (10010232132013), we get a palindrome (41033355333014).

The spelling of 31023123201001 in words is "thirty-one trillion, twenty-three billion, one hundred twenty-three million, two hundred one thousand, one".