1023311225 has 12 divisors (see below), whose sum is σ = 1278172284. Its totient is φ = 812670720.

The previous prime is 1023311207. The next prime is 1023311249. The reversal of 1023311225 is 5221133201.

It can be written as a sum of positive squares in 6 ways, for example, as 221741881 + 801569344 = 14891^2 + 28312^2 .

It is not a de Polignac number, because 1023311225 - 2⁶ = 1023311161 is a prime.

It is a super-2 number, since 2×1023311225² = 2094331726422001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023311197 and 1023311206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145964 + ... + 152813.

It is an arithmetic number, because the mean of its divisors is an integer number (106514357).

Almost surely, 2^1023311225 is an apocalyptic number.

It is an amenable number.

1023311225 is a deficient number, since it is larger than the sum of its proper divisors (254861059).

1023311225 is a wasteful number, since it uses less digits than its factorization.

1023311225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298924 (or 298919 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1023311225 is about 31989.2360802818. The cubic root of 1023311225 is about 1007.7107990919.

Adding to 1023311225 its reverse (5221133201), we get a palindrome (6244444426).

The spelling of 1023311225 in words is "one billion, twenty-three million, three hundred eleven thousand, two hundred twenty-five".