1245311110253 has 4 divisors (see below), whose sum is σ = 1423212697440. Its totient is φ = 1067409523068.

The previous prime is 1245311110231. The next prime is 1245311110259. The reversal of 1245311110253 is 3520111135421.

It is a happy number.

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 1245311110253 - 2⁸ = 1245311109997 is a prime.

It is a super-2 number, since 2×1245311110253² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245311110259) 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, 88950793583 + ... + 88950793596.

It is an arithmetic number, because the mean of its divisors is an integer number (355803174360).

Almost surely, 2^{1245311110253} is an apocalyptic number.

It is an amenable number.

1245311110253 is a deficient number, since it is larger than the sum of its proper divisors (177901587187).

1245311110253 is an equidigital number, since it uses as much as digits as its factorization.

1245311110253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177901587186.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 1245311110253 its reverse (3520111135421), we get a palindrome (4765422245674).

The spelling of 1245311110253 in words is "one trillion, two hundred forty-five billion, three hundred eleven million, one hundred ten thousand, two hundred fifty-three".