43148878231 has 2 divisors, whose sum is σ = 43148878232. Its totient is φ = 43148878230.

The previous prime is 43148878217. The next prime is 43148878277. The reversal of 43148878231 is 13287884134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43148878231 - 2²⁵ = 43115323799 is a prime.

It is a super-2 number, since 2×43148878231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43148878291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21574439115 + 21574439116.

It is an arithmetic number, because the mean of its divisors is an integer number (21574439116).

Almost surely, 2^43148878231 is an apocalyptic number.

43148878231 is a deficient number, since it is larger than the sum of its proper divisors (1).

43148878231 is an equidigital number, since it uses as much as digits as its factorization.

43148878231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1032192, while the sum is 49.

The spelling of 43148878231 in words is "forty-three billion, one hundred forty-eight million, eight hundred seventy-eight thousand, two hundred thirty-one".