1023230261 has 2 divisors, whose sum is σ = 1023230262. Its totient is φ = 1023230260.

The previous prime is 1023230251. The next prime is 1023230281. The reversal of 1023230261 is 1620323201.

It is a happy number.

It is an a-pointer prime, because the next prime (1023230281) can be obtained adding 1023230261 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 961372036 + 61858225 = 31006^2 + 7865^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023230261 - 2²² = 1019035957 is a prime.

It is a super-2 number, since 2×1023230261² = 2094000334052256242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023230251) 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, 511615130 + 511615131.

It is an arithmetic number, because the mean of its divisors is an integer number (511615131).

Almost surely, 2^1023230261 is an apocalyptic number.

It is an amenable number.

1023230261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023230261 is an equidigital number, since it uses as much as digits as its factorization.

1023230261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1023230261 is about 31987.9705670741. The cubic root of 1023230261 is about 1007.6842218242.

Adding to 1023230261 its reverse (1620323201), we get a palindrome (2643553462).

The spelling of 1023230261 in words is "one billion, twenty-three million, two hundred thirty thousand, two hundred sixty-one".