1142231313 has 32 divisors (see below), whose sum is σ = 1617656832. Its totient is φ = 715457600.

The previous prime is 1142231287. The next prime is 1142231333. The reversal of 1142231313 is 3131322411.

It is a cyclic number.

It is not a de Polignac number, because 1142231313 - 2¹² = 1142227217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1142231313.

It is not an unprimeable number, because it can be changed into a prime (1142231333) 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, 966583 + ... + 967763.

It is an arithmetic number, because the mean of its divisors is an integer number (50551776).

Almost surely, 2^1142231313 is an apocalyptic number.

It is an amenable number.

1142231313 is a deficient number, since it is larger than the sum of its proper divisors (475425519).

1142231313 is a wasteful number, since it uses less digits than its factorization.

1142231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445.

The product of its digits is 432, while the sum is 21.

The square root of 1142231313 is about 33796.9127732105. The cubic root of 1142231313 is about 1045.3250404063.

Adding to 1142231313 its reverse (3131322411), we get a palindrome (4273553724).

The spelling of 1142231313 in words is "one billion, one hundred forty-two million, two hundred thirty-one thousand, three hundred thirteen".