1131374145 has 32 divisors (see below), whose sum is σ = 1993964544. Its totient is φ = 543211200.

The previous prime is 1131374143. The next prime is 1131374183. The reversal of 1131374145 is 5414731311.

It is not a de Polignac number, because 1131374145 - 2¹ = 1131374143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131374143) 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, 16291 + ... + 50280.

It is an arithmetic number, because the mean of its divisors is an integer number (62311392).

Almost surely, 2^1131374145 is an apocalyptic number.

1131374145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131374145 is a deficient number, since it is larger than the sum of its proper divisors (862590399).

1131374145 is a wasteful number, since it uses less digits than its factorization.

1131374145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66693.

The product of its digits is 5040, while the sum is 30.

The square root of 1131374145 is about 33635.9055920901. The cubic root of 1131374145 is about 1042.0024735212.

It can be divided in two parts, 11313 and 74145, that added together give a palindrome (85458).

The spelling of 1131374145 in words is "one billion, one hundred thirty-one million, three hundred seventy-four thousand, one hundred forty-five".