1145231530 has 16 divisors (see below), whose sum is σ = 2084580360. Its totient is φ = 452945152.

The previous prime is 1145231509. The next prime is 1145231531. The reversal of 1145231530 is 351325411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 527758729 + 617472801 = 22973^2 + 24849^2 .

It is a super-2 number, since 2×1145231530² = 2623110514612281800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1145231495 and 1145231504.

It is not an unprimeable number, because it can be changed into a prime (1145231531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642499 + ... + 644278.

Almost surely, 2^1145231530 is an apocalyptic number.

1145231530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145231530 is a deficient number, since it is larger than the sum of its proper divisors (939348830).

1145231530 is a wasteful number, since it uses less digits than its factorization.

1145231530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286873.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1145231530 is about 33841.2696274829. The cubic root of 1145231530 is about 1046.2394670033.

Adding to 1145231530 its reverse (351325411), we get a palindrome (1496556941).

The spelling of 1145231530 in words is "one billion, one hundred forty-five million, two hundred thirty-one thousand, five hundred thirty".