1244340631 has 4 divisors (see below), whose sum is σ = 1256421712. Its totient is φ = 1232259552.

The previous prime is 1244340623. The next prime is 1244340659. The reversal of 1244340631 is 1360434421.

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 1244340631 - 2³ = 1244340623 is a prime.

It is a super-2 number, since 2×1244340631² = 3096767211914956322, 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 1244340631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244350631) 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, 6040386 + ... + 6040591.

It is an arithmetic number, because the mean of its divisors is an integer number (314105428).

Almost surely, 2^1244340631 is an apocalyptic number.

1244340631 is a deficient number, since it is larger than the sum of its proper divisors (12081081).

1244340631 is a wasteful number, since it uses less digits than its factorization.

1244340631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12081080.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 1244340631 is about 35275.2126995714. The cubic root of 1244340631 is about 1075.5891865920.

The spelling of 1244340631 in words is "one billion, two hundred forty-four million, three hundred forty thousand, six hundred thirty-one".