1252312312423 has 4 divisors (see below), whose sum is σ = 1295495495640. Its totient is φ = 1209129129208.

The previous prime is 1252312312421. The next prime is 1252312312457. The reversal of 1252312312423 is 3242132132521.

It is a happy number.

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 1252312312423 - 2¹ = 1252312312421 is a prime.

It is a super-2 number, since 2×1252312312423² (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 (1252312312421) 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, 21591591565 + ... + 21591591622.

It is an arithmetic number, because the mean of its divisors is an integer number (323873873910).

Almost surely, 2^{1252312312423} is an apocalyptic number.

1252312312423 is a deficient number, since it is larger than the sum of its proper divisors (43183183217).

1252312312423 is an equidigital number, since it uses as much as digits as its factorization.

1252312312423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43183183216.

The product of its digits is 17280, while the sum is 31.

Adding to 1252312312423 its reverse (3242132132521), we get a palindrome (4494444444944).

The spelling of 1252312312423 in words is "one trillion, two hundred fifty-two billion, three hundred twelve million, three hundred twelve thousand, four hundred twenty-three".