1023254140253 has 4 divisors (see below), whose sum is σ = 1027058059260. Its totient is φ = 1019450221248.

The previous prime is 1023254140247. The next prime is 1023254140291. The reversal of 1023254140253 is 3520414523201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 99892659364 + 923361480889 = 316058^2 + 960917^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023254140253 - 2²⁰ = 1023253091677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023254140243) 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, 1901959100 + ... + 1901959637.

It is an arithmetic number, because the mean of its divisors is an integer number (256764514815).

Almost surely, 2^{1023254140253} is an apocalyptic number.

It is an amenable number.

1023254140253 is a deficient number, since it is larger than the sum of its proper divisors (3803919007).

1023254140253 is an equidigital number, since it uses as much as digits as its factorization.

1023254140253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3803919006.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 1023254140253 its reverse (3520414523201), we get a palindrome (4543668663454).

The spelling of 1023254140253 in words is "one trillion, twenty-three billion, two hundred fifty-four million, one hundred forty thousand, two hundred fifty-three".