1201001623 has 2 divisors, whose sum is σ = 1201001624. Its totient is φ = 1201001622.

The previous prime is 1201001591. The next prime is 1201001651. The reversal of 1201001623 is 3261001021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201001623 - 2⁵ = 1201001591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201001597 and 1201001606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201001693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600500811 + 600500812.

It is an arithmetic number, because the mean of its divisors is an integer number (600500812).

Almost surely, 2^1201001623 is an apocalyptic number.

1201001623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201001623 is an equidigital number, since it uses as much as digits as its factorization.

1201001623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1201001623 is about 34655.4703185514. The cubic root of 1201001623 is about 1062.9541489769.

Adding to 1201001623 its reverse (3261001021), we get a palindrome (4462002644).

It can be divided in two parts, 120 and 1001623, that multiplied together give a triangular number (120194760 = T₁₅₅₀₄).

The spelling of 1201001623 in words is "one billion, two hundred one million, one thousand, six hundred twenty-three".