1011131423 has 4 divisors (see below), whose sum is σ = 1070609760. Its totient is φ = 951653088.

The previous prime is 1011131411. The next prime is 1011131431. The reversal of 1011131423 is 3241311101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3241311101 = 7 ⋅463044443.

It is a cyclic number.

It is not a de Polignac number, because 1011131423 - 2⁸ = 1011131167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 59478319 = 1011131423 / (1 + 0 + 1 + 1 + 1 + 3 + 1 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011131323) 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, 29739143 + ... + 29739176.

It is an arithmetic number, because the mean of its divisors is an integer number (267652440).

Almost surely, 2^1011131423 is an apocalyptic number.

1011131423 is a deficient number, since it is larger than the sum of its proper divisors (59478337).

1011131423 is an equidigital number, since it uses as much as digits as its factorization.

1011131423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59478336.

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

The square root of 1011131423 is about 31798.2927686378. The cubic root of 1011131423 is about 1003.6967912275.

Adding to 1011131423 its reverse (3241311101), we get a palindrome (4252442524).

The spelling of 1011131423 in words is "one billion, eleven million, one hundred thirty-one thousand, four hundred twenty-three".