1023365401 has 2 divisors, whose sum is σ = 1023365402. Its totient is φ = 1023365400.

The previous prime is 1023365383. The next prime is 1023365417. The reversal of 1023365401 is 1045633201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1007999001 + 15366400 = 31749^2 + 3920^2 .

It is an emirp because it is prime and its reverse (1045633201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1023365401 - 2⁹ = 1023364889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023365491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511682700 + 511682701.

It is an arithmetic number, because the mean of its divisors is an integer number (511682701).

Almost surely, 2^1023365401 is an apocalyptic number.

It is an amenable number.

1023365401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023365401 is an equidigital number, since it uses as much as digits as its factorization.

1023365401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1023365401 is about 31990.0828539096. The cubic root of 1023365401 is about 1007.7285821395.

Adding to 1023365401 its reverse (1045633201), we get a palindrome (2068998602).

The spelling of 1023365401 in words is "one billion, twenty-three million, three hundred sixty-five thousand, four hundred one".