1231414643397 has 4 divisors (see below), whose sum is σ = 1641886191200. Its totient is φ = 820943095596.

The previous prime is 1231414643353. The next prime is 1231414643423. The reversal of 1231414643397 is 7933464141321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1231414643397 - 2¹¹ = 1231414641349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231414443397) 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, 205235773897 + ... + 205235773902.

It is an arithmetic number, because the mean of its divisors is an integer number (410471547800).

Almost surely, 2^{1231414643397} is an apocalyptic number.

It is an amenable number.

1231414643397 is a deficient number, since it is larger than the sum of its proper divisors (410471547803).

1231414643397 is an equidigital number, since it uses as much as digits as its factorization.

1231414643397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410471547802.

The product of its digits is 1306368, while the sum is 48.

The spelling of 1231414643397 in words is "one trillion, two hundred thirty-one billion, four hundred fourteen million, six hundred forty-three thousand, three hundred ninety-seven".