1011331423 has 2 divisors, whose sum is σ = 1011331424. Its totient is φ = 1011331422.

The previous prime is 1011331393. The next prime is 1011331427. The reversal of 1011331423 is 3241331101.

It is a strong prime.

It is an emirp because it is prime and its reverse (3241331101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011331423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011331423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011331427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505665711 + 505665712.

It is an arithmetic number, because the mean of its divisors is an integer number (505665712).

Almost surely, 2^1011331423 is an apocalyptic number.

1011331423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011331423 is an equidigital number, since it uses as much as digits as its factorization.

1011331423 is an evil number, because the sum of its binary digits is even.

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

The square root of 1011331423 is about 31801.4374360657. The cubic root of 1011331423 is about 1003.7629633458.

Adding to 1011331423 its reverse (3241331101), we get a palindrome (4252662524).

The spelling of 1011331423 in words is "one billion, eleven million, three hundred thirty-one thousand, four hundred twenty-three".