1231344031 has 8 divisors (see below), whose sum is σ = 1329187680. Its totient is φ = 1137192672.

The previous prime is 1231344011. The next prime is 1231344041. The reversal of 1231344031 is 1304431321.

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 1231344031 - 2¹⁹ = 1230819743 is a prime.

It is a super-2 number, since 2×1231344031² = 3032416245358657922, 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 = 1231343993 and 1231344011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231344011) 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, 922380 + ... + 923713.

It is an arithmetic number, because the mean of its divisors is an integer number (166148460).

Almost surely, 2^1231344031 is an apocalyptic number.

1231344031 is a deficient number, since it is larger than the sum of its proper divisors (97843649).

1231344031 is a wasteful number, since it uses less digits than its factorization.

1231344031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846145.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1231344031 is about 35090.5119797361. The cubic root of 1231344031 is about 1071.8313851599.

Adding to 1231344031 its reverse (1304431321), we get a palindrome (2535775352).

The spelling of 1231344031 in words is "one billion, two hundred thirty-one million, three hundred forty-four thousand, thirty-one".