1153423031 has 4 divisors (see below), whose sum is σ = 1155735000. Its totient is φ = 1151111064.

The previous prime is 1153422971. The next prime is 1153423049. The reversal of 1153423031 is 1303243511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1153423031 - 2⁶ = 1153422967 is a prime.

It is a super-2 number, since 2×1153423031² = 2660769376882453922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1153422988 and 1153423006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153423081) 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, 1155236 + ... + 1156233.

It is an arithmetic number, because the mean of its divisors is an integer number (288933750).

Almost surely, 2^1153423031 is an apocalyptic number.

1153423031 is a deficient number, since it is larger than the sum of its proper divisors (2311969).

1153423031 is an equidigital number, since it uses as much as digits as its factorization.

1153423031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311968.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1153423031 is about 33962.0822535957. The cubic root of 1153423031 is about 1048.7280231577.

Adding to 1153423031 its reverse (1303243511), we get a palindrome (2456666542).

The spelling of 1153423031 in words is "one billion, one hundred fifty-three million, four hundred twenty-three thousand, thirty-one".