43131654946 has 4 divisors (see below), whose sum is σ = 64697482422. Its totient is φ = 21565827472.

The previous prime is 43131654883. The next prime is 43131654959. The reversal of 43131654946 is 64945613134.

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

It can be written as a sum of positive squares in only one way, i.e., 39041412921 + 4090242025 = 197589^2 + 63955^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43131654896 and 43131654905.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10782913735 + ... + 10782913738.

Almost surely, 2^43131654946 is an apocalyptic number.

43131654946 is a deficient number, since it is larger than the sum of its proper divisors (21565827476).

43131654946 is a wasteful number, since it uses less digits than its factorization.

43131654946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21565827475.

The product of its digits is 933120, while the sum is 46.

The spelling of 43131654946 in words is "forty-three billion, one hundred thirty-one million, six hundred fifty-four thousand, nine hundred forty-six".