243011032131 has 48 divisors (see below), whose sum is σ = 379990476288. Its totient is φ = 137734228800.

The previous prime is 243011032097. The next prime is 243011032151. The reversal of 243011032131 is 131230110342.

It is not a de Polignac number, because 243011032131 - 2⁶ = 243011032067 is a prime.

It is a super-2 number, since 2×243011032131² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 243011032098 and 243011032107.

It is not an unprimeable number, because it can be changed into a prime (243011032151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10949676 + ... + 10971846.

It is an arithmetic number, because the mean of its divisors is an integer number (7916468256).

Almost surely, 2^243011032131 is an apocalyptic number.

243011032131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

243011032131 is a deficient number, since it is larger than the sum of its proper divisors (136979444157).

243011032131 is a wasteful number, since it uses less digits than its factorization.

243011032131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22792 (or 22785 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 243011032131 its reverse (131230110342), we get a palindrome (374241142473).

The spelling of 243011032131 in words is "two hundred forty-three billion, eleven million, thirty-two thousand, one hundred thirty-one".