1023513311 has 2 divisors, whose sum is σ = 1023513312. Its totient is φ = 1023513310.

The previous prime is 1023513289. The next prime is 1023513331. The reversal of 1023513311 is 1133153201.

It is an a-pointer prime, because the next prime (1023513331) can be obtained adding 1023513311 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1023513311 - 2⁶ = 1023513247 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023513331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511756655 + 511756656.

It is an arithmetic number, because the mean of its divisors is an integer number (511756656).

Almost surely, 2^1023513311 is an apocalyptic number.

1023513311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023513311 is an equidigital number, since it uses as much as digits as its factorization.

1023513311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1023513311 is about 31992.3945805874. The cubic root of 1023513311 is about 1007.7771297889. Note that the first 3 decimals are identical.

Adding to 1023513311 its reverse (1133153201), we get a palindrome (2156666512).

The spelling of 1023513311 in words is "one billion, twenty-three million, five hundred thirteen thousand, three hundred eleven".