43138298931 has 64 divisors (see below), whose sum is σ = 72296125440. Its totient is φ = 22273781760.

The previous prime is 43138298849. The next prime is 43138298933. The reversal of 43138298931 is 13989283134.

It is not a de Polignac number, because 43138298931 - 2⁹ = 43138298419 is a prime.

It is a super-3 number, since 3×43138298931³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (43138298933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3876231 + ... + 3887343.

It is an arithmetic number, because the mean of its divisors is an integer number (1129626960).

Almost surely, 2^43138298931 is an apocalyptic number.

43138298931 is a deficient number, since it is larger than the sum of its proper divisors (29157826509).

43138298931 is a wasteful number, since it uses less digits than its factorization.

43138298931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11436.

The product of its digits is 1119744, while the sum is 51.

The spelling of 43138298931 in words is "forty-three billion, one hundred thirty-eight million, two hundred ninety-eight thousand, nine hundred thirty-one".