213243040131 has 32 divisors (see below), whose sum is σ = 332574336000. Its totient is φ = 120096238080.

The previous prime is 213243040069. The next prime is 213243040147. The reversal of 213243040131 is 131040342312.

It is a happy number.

It is not a de Polignac number, because 213243040131 - 2²³ = 213234651523 is a prime.

It is a super-2 number, since 2×213243040131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213243040151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2361456 + ... + 2450093.

It is an arithmetic number, because the mean of its divisors is an integer number (10392948000).

Almost surely, 2^213243040131 is an apocalyptic number.

213243040131 is a deficient number, since it is larger than the sum of its proper divisors (119331295869).

213243040131 is a wasteful number, since it uses less digits than its factorization.

213243040131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4811659.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 213243040131 its reverse (131040342312), we get a palindrome (344283382443).

The spelling of 213243040131 in words is "two hundred thirteen billion, two hundred forty-three million, forty thousand, one hundred thirty-one".