213431130 has 48 divisors (see below), whose sum is σ = 605371104. Its totient is φ = 51740640.

The previous prime is 213431129. The next prime is 213431149. The reversal of 213431130 is 31134312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106804 + ... + 108783.

It is an arithmetic number, because the mean of its divisors is an integer number (12611898).

Almost surely, 2^213431130 is an apocalyptic number.

213431130 is an abundant number, since it is smaller than the sum of its proper divisors (391939974).

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

213431130 is a wasteful number, since it uses less digits than its factorization.

213431130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215611 (or 215608 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 213431130 is about 14609.2823232355. The cubic root of 213431130 is about 597.6119244353.

Adding to 213431130 its reverse (31134312), we get a palindrome (244565442).

The spelling of 213431130 in words is "two hundred thirteen million, four hundred thirty-one thousand, one hundred thirty".