43131454100397 has 24 divisors (see below), whose sum is σ = 67125614352888. Its totient is φ = 26529678489600.

The previous prime is 43131454100389. The next prime is 43131454100459. The reversal of 43131454100397 is 79300145413134.

43131454100397 is a `hidden beast` number, since 4 + 3 + 1 + 3 + 1 + 454 + 100 + 3 + 97 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8184983405481 + 34946470694916 = 2860941^2 + 5911554^2 .

It is not a de Polignac number, because 43131454100397 - 2³ = 43131454100389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43131454100327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88330504 + ... + 88817457.

It is an arithmetic number, because the mean of its divisors is an integer number (2796900598037).

Almost surely, 2^{43131454100397} is an apocalyptic number.

It is an amenable number.

43131454100397 is a deficient number, since it is larger than the sum of its proper divisors (23994160252491).

43131454100397 is a wasteful number, since it uses less digits than its factorization.

43131454100397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177150061 (or 177150058 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 43131454100397 in words is "forty-three trillion, one hundred thirty-one billion, four hundred fifty-four million, one hundred thousand, three hundred ninety-seven".