1145512131 has 32 divisors (see below), whose sum is σ = 1601014272. Its totient is φ = 727937280.

The previous prime is 1145512129. The next prime is 1145512141. The reversal of 1145512131 is 1312155411.

It is not a de Polignac number, because 1145512131 - 2¹ = 1145512129 is a prime.

It is a super-2 number, since 2×1145512131² = 2624396084536322322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1145512141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 969361 + ... + 970541.

It is an arithmetic number, because the mean of its divisors is an integer number (50031696).

Almost surely, 2^1145512131 is an apocalyptic number.

1145512131 is a deficient number, since it is larger than the sum of its proper divisors (455502141).

1145512131 is a wasteful number, since it uses less digits than its factorization.

1145512131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403.

The product of its digits is 600, while the sum is 24.

The square root of 1145512131 is about 33845.4152138809. The cubic root of 1145512131 is about 1046.3249087850.

Adding to 1145512131 its reverse (1312155411), we get a palindrome (2457667542).

The spelling of 1145512131 in words is "one billion, one hundred forty-five million, five hundred twelve thousand, one hundred thirty-one".