22131043243031 has 4 divisors (see below), whose sum is σ = 22196713994832. Its totient is φ = 22065372491232.

The previous prime is 22131043243019. The next prime is 22131043243081. The reversal of 22131043243031 is 13034234013122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22131043243031 - 2²⁶ = 22130976134167 is a prime.

It is a super-2 number, since 2×22131043243031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22131043242985 and 22131043243003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131043243081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32835375395 + ... + 32835376068.

It is an arithmetic number, because the mean of its divisors is an integer number (5549178498708).

Almost surely, 2^{22131043243031} is an apocalyptic number.

22131043243031 is a deficient number, since it is larger than the sum of its proper divisors (65670751801).

22131043243031 is an equidigital number, since it uses as much as digits as its factorization.

22131043243031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65670751800.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 22131043243031 its reverse (13034234013122), we get a palindrome (35165277256153).

The spelling of 22131043243031 in words is "twenty-two trillion, one hundred thirty-one billion, forty-three million, two hundred forty-three thousand, thirty-one".