1343240031 has 8 divisors (see below), whose sum is σ = 2046841984. Its totient is φ = 767565720.

The previous prime is 1343240021. The next prime is 1343240047. The reversal of 1343240031 is 1300423431.

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

It is not a de Polignac number, because 1343240031 - 2⁶ = 1343239967 is a prime.

It is a super-2 number, since 2×1343240031² = 3608587561761761922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 63963811 = 1343240031 / (1 + 3 + 4 + 3 + 2 + 4 + 0 + 0 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343240021) 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, 31981885 + ... + 31981926.

It is an arithmetic number, because the mean of its divisors is an integer number (255855248).

Almost surely, 2^1343240031 is an apocalyptic number.

1343240031 is a deficient number, since it is larger than the sum of its proper divisors (703601953).

1343240031 is an equidigital number, since it uses as much as digits as its factorization.

1343240031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63963821.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1343240031 is about 36650.2391670232. The cubic root of 1343240031 is about 1103.3616256947.

Adding to 1343240031 its reverse (1300423431), we get a palindrome (2643663462).

The spelling of 1343240031 in words is "one billion, three hundred forty-three million, two hundred forty thousand, thirty-one".