1253533023 has 8 divisors (see below), whose sum is σ = 1857086000. Its totient is φ = 835688664.

The previous prime is 1253533009. The next prime is 1253533031. The reversal of 1253533023 is 3203353521.

1253533023 is a `hidden beast` number, since 1 + 2 + 5 + 353 + 302 + 3 = 666.

It is not a de Polignac number, because 1253533023 - 2⁸ = 1253532767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 46427149 = 1253533023 / (1 + 2 + 5 + 3 + 5 + 3 + 3 + 0 + 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 (1253533093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23213548 + ... + 23213601.

It is an arithmetic number, because the mean of its divisors is an integer number (232135750).

Almost surely, 2^1253533023 is an apocalyptic number.

1253533023 is a deficient number, since it is larger than the sum of its proper divisors (603552977).

1253533023 is an equidigital number, since it uses as much as digits as its factorization.

1253533023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46427158 (or 46427152 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 1253533023 is about 35405.2682944219. The cubic root of 1253533023 is about 1078.2312793225.

Adding to 1253533023 its reverse (3203353521), we get a palindrome (4456886544).

The spelling of 1253533023 in words is "one billion, two hundred fifty-three million, five hundred thirty-three thousand, twenty-three".