1244143631 has 8 divisors (see below), whose sum is σ = 1263569664. Its totient is φ = 1224852480.

The previous prime is 1244143619. The next prime is 1244143633. The reversal of 1244143631 is 1363414421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1244143631 - 2¹⁸ = 1243881487 is a prime.

It is a super-2 number, since 2×1244143631² = 3095786749115728322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1244143594 and 1244143603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244143633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15050 + ... + 52103.

It is an arithmetic number, because the mean of its divisors is an integer number (157946208).

Almost surely, 2^1244143631 is an apocalyptic number.

1244143631 is a deficient number, since it is larger than the sum of its proper divisors (19426033).

1244143631 is an equidigital number, since it uses as much as digits as its factorization.

1244143631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67441.

The product of its digits is 6912, while the sum is 29.

The square root of 1244143631 is about 35272.4202600275. The cubic root of 1244143631 is about 1075.5324223247.

The spelling of 1244143631 in words is "one billion, two hundred forty-four million, one hundred forty-three thousand, six hundred thirty-one".