1252442400031 has 4 divisors (see below), whose sum is σ = 1252451772000. Its totient is φ = 1252433028064.

The previous prime is 1252442400029. The next prime is 1252442400037. The reversal of 1252442400031 is 1300042442521.

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 1252442400031 - 2¹ = 1252442400029 is a prime.

It is a super-2 number, since 2×1252442400031² (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 (1252442400037) 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, 4482586 + ... + 4753783.

It is an arithmetic number, because the mean of its divisors is an integer number (313112943000).

Almost surely, 2^{1252442400031} is an apocalyptic number.

1252442400031 is a deficient number, since it is larger than the sum of its proper divisors (9371969).

1252442400031 is an equidigital number, since it uses as much as digits as its factorization.

1252442400031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9371968.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 1252442400031 its reverse (1300042442521), we get a palindrome (2552484842552).

The spelling of 1252442400031 in words is "one trillion, two hundred fifty-two billion, four hundred forty-two million, four hundred thousand, thirty-one".