1011231343 has 4 divisors (see below), whose sum is σ = 1027808968. Its totient is φ = 994653720.

The previous prime is 1011231341. The next prime is 1011231371. The reversal of 1011231343 is 3431321101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011231343 - 2¹ = 1011231341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011231343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011231341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8288721 + ... + 8288842.

It is an arithmetic number, because the mean of its divisors is an integer number (256952242).

Almost surely, 2^1011231343 is an apocalyptic number.

1011231343 is a deficient number, since it is larger than the sum of its proper divisors (16577625).

1011231343 is an equidigital number, since it uses as much as digits as its factorization.

1011231343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16577624.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1011231343 is about 31799.8638833565. The cubic root of 1011231343 is about 1003.7298519084.

Adding to 1011231343 its reverse (3431321101), we get a palindrome (4442552444).

The spelling of 1011231343 in words is "one billion, eleven million, two hundred thirty-one thousand, three hundred forty-three".