2131434400442 has 16 divisors (see below), whose sum is σ = 3366480904800. Its totient is φ = 1009309371120.

The previous prime is 2131434400441. The next prime is 2131434400471. The reversal of 2131434400442 is 2440044341312.

It is a junction number, because it is equal to n+sod(n) for n = 2131434400399 and 2131434400408.

It is not an unprimeable number, because it can be changed into a prime (2131434400441) 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, 8695592 + ... + 8937347.

It is an arithmetic number, because the mean of its divisors is an integer number (210405056550).

Almost surely, 2^{2131434400442} is an apocalyptic number.

2131434400442 is a deficient number, since it is larger than the sum of its proper divisors (1235046504358).

2131434400442 is a wasteful number, since it uses less digits than its factorization.

2131434400442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17636141.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 2131434400442 its reverse (2440044341312), we get a palindrome (4571478741754).

The spelling of 2131434400442 in words is "two trillion, one hundred thirty-one billion, four hundred thirty-four million, four hundred thousand, four hundred forty-two".