1011312143 has 8 divisors (see below), whose sum is σ = 1039610016. Its totient is φ = 983404800.

The previous prime is 1011312131. The next prime is 1011312151. The reversal of 1011312143 is 3412131101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011312143 - 2⁶ = 1011312079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011312193) 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, 92378 + ... + 102743.

It is an arithmetic number, because the mean of its divisors is an integer number (129951252).

Almost surely, 2^1011312143 is an apocalyptic number.

1011312143 is a deficient number, since it is larger than the sum of its proper divisors (28297873).

1011312143 is an equidigital number, since it uses as much as digits as its factorization.

1011312143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195265.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1011312143 is about 31801.1343036691. The cubic root of 1011312143 is about 1003.7565847336.

Adding to 1011312143 its reverse (3412131101), we get a palindrome (4423443244).

The spelling of 1011312143 in words is "one billion, eleven million, three hundred twelve thousand, one hundred forty-three".