131423431154333 has 4 divisors (see below), whose sum is σ = 131427540608508. Its totient is φ = 131419321700160.

The previous prime is 131423431154329. The next prime is 131423431154347. The reversal of 131423431154333 is 333451134324131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9650727459844 + 121772703694489 = 3106562^2 + 11035067^2 .

It is a cyclic number.

It is not a de Polignac number, because 131423431154333 - 2² = 131423431154329 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131423431154233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2054679116 + ... + 2054743077.

It is an arithmetic number, because the mean of its divisors is an integer number (32856885152127).

Almost surely, 2^{131423431154333} is an apocalyptic number.

It is an amenable number.

131423431154333 is a deficient number, since it is larger than the sum of its proper divisors (4109454175).

131423431154333 is an equidigital number, since it uses as much as digits as its factorization.

131423431154333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109454174.

The product of its digits is 466560, while the sum is 41.

Adding to 131423431154333 its reverse (333451134324131), we get a palindrome (464874565478464).

The spelling of 131423431154333 in words is "one hundred thirty-one trillion, four hundred twenty-three billion, four hundred thirty-one million, one hundred fifty-four thousand, three hundred thirty-three".