1340421244431 has 8 divisors (see below), whose sum is σ = 1881292974720. Its totient is φ = 846581838552.

The previous prime is 1340421244391. The next prime is 1340421244493. The reversal of 1340421244431 is 1344421240431.

It is a happy number.

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

It is not a de Polignac number, because 1340421244431 - 2⁷ = 1340421244303 is a prime.

It is a super-2 number, since 2×1340421244431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1340421244392 and 1340421244401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340421144431) 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, 11758081035 + ... + 11758081148.

It is an arithmetic number, because the mean of its divisors is an integer number (235161621840).

Almost surely, 2^{1340421244431} is an apocalyptic number.

1340421244431 is a deficient number, since it is larger than the sum of its proper divisors (540871730289).

1340421244431 is a wasteful number, since it uses less digits than its factorization.

1340421244431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23516162205.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 1340421244431 its reverse (1344421240431), we get a palindrome (2684842484862).

The spelling of 1340421244431 in words is "one trillion, three hundred forty billion, four hundred twenty-one million, two hundred forty-four thousand, four hundred thirty-one".