1340431112402 has 8 divisors (see below), whose sum is σ = 2023453335756. Its totient is φ = 665946667152.

The previous prime is 1340431112399. The next prime is 1340431112407. The reversal of 1340431112402 is 2042111340431.

It can be written as a sum of positive squares in 2 ways, for example, as 1309356121441 + 31074990961 = 1144271^2 + 176281^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1340431112407) 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, 2134444133 + ... + 2134444760.

Almost surely, 2^{1340431112402} is an apocalyptic number.

1340431112402 is a deficient number, since it is larger than the sum of its proper divisors (683022223354).

1340431112402 is a wasteful number, since it uses less digits than its factorization.

1340431112402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268889052.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 1340431112402 its reverse (2042111340431), we get a palindrome (3382542452833).

The spelling of 1340431112402 in words is "one trillion, three hundred forty billion, four hundred thirty-one million, one hundred twelve thousand, four hundred two".