1145310231 has 32 divisors (see below), whose sum is σ = 1748500992. Its totient is φ = 661415040.

The previous prime is 1145310223. The next prime is 1145310259. The reversal of 1145310231 is 1320135411.

It is not a de Polignac number, because 1145310231 - 2³ = 1145310223 is a prime.

It is a super-2 number, since 2×1145310231² = 2623471050466546722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1145310198 and 1145310207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145310731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35496 + ... + 59586.

It is an arithmetic number, because the mean of its divisors is an integer number (54640656).

Almost surely, 2^1145310231 is an apocalyptic number.

1145310231 is a deficient number, since it is larger than the sum of its proper divisors (603190761).

1145310231 is a wasteful number, since it uses less digits than its factorization.

1145310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24183.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1145310231 is about 33842.4324037147. The cubic root of 1145310231 is about 1046.2634325230.

Adding to 1145310231 its reverse (1320135411), we get a palindrome (2465445642).

The spelling of 1145310231 in words is "one billion, one hundred forty-five million, three hundred ten thousand, two hundred thirty-one".