215153131430 has 16 divisors (see below), whose sum is σ = 387436308624. Its totient is φ = 86025547680.

The previous prime is 215153131423. The next prime is 215153131433. The reversal of 215153131430 is 34131351512.

It is a junction number, because it is equal to n+sod(n) for n = 215153131393 and 215153131402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215153131433) 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, 4437797 + ... + 4486016.

It is an arithmetic number, because the mean of its divisors is an integer number (24214769289).

Almost surely, 2^215153131430 is an apocalyptic number.

215153131430 is a deficient number, since it is larger than the sum of its proper divisors (172283177194).

215153131430 is a wasteful number, since it uses less digits than its factorization.

215153131430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8926231.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 215153131430 its reverse (34131351512), we get a palindrome (249284482942).

The spelling of 215153131430 in words is "two hundred fifteen billion, one hundred fifty-three million, one hundred thirty-one thousand, four hundred thirty".