213131234370 has 16 divisors (see below), whose sum is σ = 511514962560. Its totient is φ = 56834995824.

The previous prime is 213131234363. The next prime is 213131234383. The reversal of 213131234370 is 73432131312.

213131234370 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 7104374479 = 213131234370 / (2 + 1 + 3 + 1 + 3 + 1 + 2 + 3 + 4 + 3 + 7 + 0).

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, 3552187210 + ... + 3552187269.

It is an arithmetic number, because the mean of its divisors is an integer number (31969685160).

Almost surely, 2^213131234370 is an apocalyptic number.

213131234370 is an abundant number, since it is smaller than the sum of its proper divisors (298383728190).

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

213131234370 is a wasteful number, since it uses less digits than its factorization.

213131234370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7104374489.

The product of its (nonzero) digits is 9072, while the sum is 30.

Adding to 213131234370 its reverse (73432131312), we get a palindrome (286563365682).

The spelling of 213131234370 in words is "two hundred thirteen billion, one hundred thirty-one million, two hundred thirty-four thousand, three hundred seventy".