21311431400130 has 16 divisors (see below), whose sum is σ = 51147435360384. Its totient is φ = 5683048373360.

The previous prime is 21311431400101. The next prime is 21311431400153. The reversal of 21311431400130 is 3100413411312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21311431400130.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355190523306 + ... + 355190523365.

It is an arithmetic number, because the mean of its divisors is an integer number (3196714710024).

Almost surely, 2^{21311431400130} is an apocalyptic number.

21311431400130 is an abundant number, since it is smaller than the sum of its proper divisors (29836003960254).

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

21311431400130 is a wasteful number, since it uses less digits than its factorization.

21311431400130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710381046681.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21311431400130 its reverse (3100413411312), we get a palindrome (24411844811442).

The spelling of 21311431400130 in words is "twenty-one trillion, three hundred eleven billion, four hundred thirty-one million, four hundred thousand, one hundred thirty".