22878316231 has 4 divisors (see below), whose sum is σ = 23616326464. Its totient is φ = 22140306000.

The previous prime is 22878316213. The next prime is 22878316249. The reversal of 22878316231 is 13261387822.

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

It is an interprime number because it is at equal distance from previous prime (22878316213) and next prime (22878316249).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22878316231 is a prime.

It is a super-2 number, since 2×22878316231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22878316211) 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, 369005070 + ... + 369005131.

It is an arithmetic number, because the mean of its divisors is an integer number (5904081616).

Almost surely, 2^22878316231 is an apocalyptic number.

22878316231 is a deficient number, since it is larger than the sum of its proper divisors (738010233).

22878316231 is an equidigital number, since it uses as much as digits as its factorization.

22878316231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738010232.

The product of its digits is 193536, while the sum is 43.

The spelling of 22878316231 in words is "twenty-two billion, eight hundred seventy-eight million, three hundred sixteen thousand, two hundred thirty-one".