131044434243 has 16 divisors (see below), whose sum is σ = 174891484800. Its totient is φ = 87280217024.

The previous prime is 131044434239. The next prime is 131044434281. The reversal of 131044434243 is 342434440131.

It is a cyclic number.

It is not a de Polignac number, because 131044434243 - 2² = 131044434239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131044430243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20721880 + ... + 20728202.

It is an arithmetic number, because the mean of its divisors is an integer number (10930717800).

Almost surely, 2^131044434243 is an apocalyptic number.

131044434243 is a deficient number, since it is larger than the sum of its proper divisors (43847050557).

131044434243 is a wasteful number, since it uses less digits than its factorization.

131044434243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11778.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 131044434243 its reverse (342434440131), we get a palindrome (473478874374).

The spelling of 131044434243 in words is "one hundred thirty-one billion, forty-four million, four hundred thirty-four thousand, two hundred forty-three".