43012400431 has 32 divisors (see below), whose sum is σ = 60790464000. Its totient is φ = 29309662080.

The previous prime is 43012400423. The next prime is 43012400449. The reversal of 43012400431 is 13400421034.

43012400431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 43012400431 - 2³ = 43012400423 is a prime.

It is a super-2 number, since 2×43012400431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43012400401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1111756 + ... + 1149793.

It is an arithmetic number, because the mean of its divisors is an integer number (1899702000).

Almost surely, 2^43012400431 is an apocalyptic number.

43012400431 is a deficient number, since it is larger than the sum of its proper divisors (17778063569).

43012400431 is a wasteful number, since it uses less digits than its factorization.

43012400431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261599.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 43012400431 its reverse (13400421034), we get a palindrome (56412821465).

The spelling of 43012400431 in words is "forty-three billion, twelve million, four hundred thousand, four hundred thirty-one".