1231414643406 has 64 divisors (see below), whose sum is σ = 2523739680000. Its totient is φ = 400428978432.

The previous prime is 1231414643353. The next prime is 1231414643423. The reversal of 1231414643406 is 6043464141321.

It is a super-2 number, since 2×1231414643406² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146088400 + ... + 146096828.

It is an arithmetic number, because the mean of its divisors is an integer number (39433432500).

Almost surely, 2^{1231414643406} is an apocalyptic number.

1231414643406 is an abundant number, since it is smaller than the sum of its proper divisors (1292325036594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231414643406 is a wasteful number, since it uses less digits than its factorization.

1231414643406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11601.

The product of its (nonzero) digits is 165888, while the sum is 39.

Adding to 1231414643406 its reverse (6043464141321), we get a palindrome (7274878784727).

The spelling of 1231414643406 in words is "one trillion, two hundred thirty-one billion, four hundred fourteen million, six hundred forty-three thousand, four hundred six".