213131240124430 has 128 divisors (see below), whose sum is σ = 403339886788608. Its totient is φ = 81005437763712.

The previous prime is 213131240124389. The next prime is 213131240124433. The reversal of 213131240124430 is 34421042131312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 213131240124392 and 213131240124401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213131240124433) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2897854917 + ... + 2897928463.

It is an arithmetic number, because the mean of its divisors is an integer number (3151092865536).

Almost surely, 2^{213131240124430} is an apocalyptic number.

213131240124430 is a deficient number, since it is larger than the sum of its proper divisors (190208646664178).

213131240124430 is a wasteful number, since it uses less digits than its factorization.

213131240124430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74510.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 213131240124430 its reverse (34421042131312), we get a palindrome (247552282255742).

The spelling of 213131240124430 in words is "two hundred thirteen trillion, one hundred thirty-one billion, two hundred forty million, one hundred twenty-four thousand, four hundred thirty".