1013123253 has 4 divisors (see below), whose sum is σ = 1350831008. Its totient is φ = 675415500.

The previous prime is 1013123239. The next prime is 1013123257. The reversal of 1013123253 is 3523213101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1013123253 - 2¹⁴ = 1013106869 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 (1013123257) 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, 168853873 + ... + 168853878.

It is an arithmetic number, because the mean of its divisors is an integer number (337707752).

Almost surely, 2^1013123253 is an apocalyptic number.

It is an amenable number.

1013123253 is a deficient number, since it is larger than the sum of its proper divisors (337707755).

1013123253 is an equidigital number, since it uses as much as digits as its factorization.

1013123253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337707754.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1013123253 is about 31829.5971228038. The cubic root of 1013123253 is about 1004.3554204391.

Adding to 1013123253 its reverse (3523213101), we get a palindrome (4536336354).

The spelling of 1013123253 in words is "one billion, thirteen million, one hundred twenty-three thousand, two hundred fifty-three".