1340220220431 has 8 divisors (see below), whose sum is σ = 1787081807280. Its totient is φ = 893419390272.

The previous prime is 1340220220351. The next prime is 1340220220489.

It is a happy number.

1340220220431 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 1340220220431 - 2¹¹ = 1340220218383 is a prime.

It is a super-2 number, since 2×1340220220431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340220220531) 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, 15137676 + ... + 15225953.

It is an arithmetic number, because the mean of its divisors is an integer number (223385225910).

Almost surely, 2^{1340220220431} is an apocalyptic number.

1340220220431 is a deficient number, since it is larger than the sum of its proper divisors (446861586849).

1340220220431 is a wasteful number, since it uses less digits than its factorization.

1340220220431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30378345.

The product of its (nonzero) digits is 2304, while the sum is 24.

It can be divided in two parts, 1340220 and 220431, that added together give a palindrome (1560651).

The spelling of 1340220220431 in words is "one trillion, three hundred forty billion, two hundred twenty million, two hundred twenty thousand, four hundred thirty-one".