1111431023 has 2 divisors, whose sum is σ = 1111431024. Its totient is φ = 1111431022.

The previous prime is 1111431017. The next prime is 1111431029. The reversal of 1111431023 is 3201341111.

It is a balanced prime because it is at equal distance from previous prime (1111431017) and next prime (1111431029).

It is a cyclic number.

It is not a de Polignac number, because 1111431023 - 2⁶ = 1111430959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111430992 and 1111431010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111431029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555715511 + 555715512.

It is an arithmetic number, because the mean of its divisors is an integer number (555715512).

Almost surely, 2^1111431023 is an apocalyptic number.

1111431023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111431023 is an equidigital number, since it uses as much as digits as its factorization.

1111431023 is an evil number, because the sum of its binary digits is even.

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

The square root of 1111431023 is about 33338.1316663067. The cubic root of 1111431023 is about 1035.8435631747.

Adding to 1111431023 its reverse (3201341111), we get a palindrome (4312772134).

The spelling of 1111431023 in words is "one billion, one hundred eleven million, four hundred thirty-one thousand, twenty-three".