2131404400123 has 16 divisors (see below), whose sum is σ = 2258495623296. Its totient is φ = 2004504261760.

The previous prime is 2131404400091. The next prime is 2131404400141. The reversal of 2131404400123 is 3210044041312.

It is a cyclic number.

It is not a de Polignac number, because 2131404400123 - 2⁵ = 2131404400091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131404400193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211213308 + ... + 211223398.

It is an arithmetic number, because the mean of its divisors is an integer number (141155976456).

Almost surely, 2^{2131404400123} is an apocalyptic number.

2131404400123 is a deficient number, since it is larger than the sum of its proper divisors (127091223173).

2131404400123 is a wasteful number, since it uses less digits than its factorization.

2131404400123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18314.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2131404400123 its reverse (3210044041312), we get a palindrome (5341448441435).

The spelling of 2131404400123 in words is "two trillion, one hundred thirty-one billion, four hundred four million, four hundred thousand, one hundred twenty-three".