1244900431 has 4 divisors (see below), whose sum is σ = 1245349264. Its totient is φ = 1244451600.

The previous prime is 1244900417. The next prime is 1244900441. The reversal of 1244900431 is 1340094421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1340094421 = 61 ⋅21968761.

It is a cyclic number.

It is not a de Polignac number, because 1244900431 - 2¹¹ = 1244898383 is a prime.

It is a super-2 number, since 2×1244900431² = 3099554166207971522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1244900431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244900441) 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, 220230 + ... + 225811.

It is an arithmetic number, because the mean of its divisors is an integer number (311337316).

Almost surely, 2^1244900431 is an apocalyptic number.

1244900431 is a deficient number, since it is larger than the sum of its proper divisors (448833).

1244900431 is an equidigital number, since it uses as much as digits as its factorization.

1244900431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448832.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1244900431 is about 35283.1465575280. The cubic root of 1244900431 is about 1075.7504566231.

Adding to 1244900431 its reverse (1340094421), we get a palindrome (2584994852).

The spelling of 1244900431 in words is "one billion, two hundred forty-four million, nine hundred thousand, four hundred thirty-one".