1161234423 has 12 divisors (see below), whose sum is σ = 1677676000. Its totient is φ = 774000576.

The previous prime is 1161234413. The next prime is 1161234449. The reversal of 1161234423 is 3244321611.

It is a happy number.

1161234423 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 234 + 423 = 666.

It is not a de Polignac number, because 1161234423 - 2⁸ = 1161234167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161234413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50703 + ... + 69951.

Almost surely, 2^1161234423 is an apocalyptic number.

1161234423 is a deficient number, since it is larger than the sum of its proper divisors (516441577).

1161234423 is a wasteful number, since it uses less digits than its factorization.

1161234423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25958 (or 25955 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1161234423 is about 34076.8898668878. The cubic root of 1161234423 is about 1051.0901521224.

The spelling of 1161234423 in words is "one billion, one hundred sixty-one million, two hundred thirty-four thousand, four hundred twenty-three".