1111423051 has 2 divisors, whose sum is σ = 1111423052. Its totient is φ = 1111423050.

The previous prime is 1111423013. The next prime is 1111423073. The reversal of 1111423051 is 1503241111.

It is a strong prime.

It is an emirp because it is prime and its reverse (1503241111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111423051 is a prime.

It is a super-2 number, since 2×1111423051² = 2470522396588297202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1111423151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555711525 + 555711526.

It is an arithmetic number, because the mean of its divisors is an integer number (555711526).

Almost surely, 2^1111423051 is an apocalyptic number.

1111423051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111423051 is an equidigital number, since it uses as much as digits as its factorization.

1111423051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1111423051 is about 33338.0121033033. The cubic root of 1111423051 is about 1035.8410865583.

Adding to 1111423051 its reverse (1503241111), we get a palindrome (2614664162).

The spelling of 1111423051 in words is "one billion, one hundred eleven million, four hundred twenty-three thousand, fifty-one".