131434553 has 2 divisors, whose sum is σ = 131434554. Its totient is φ = 131434552.

The previous prime is 131434543. The next prime is 131434579. The reversal of 131434553 is 355434131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99940009 + 31494544 = 9997^2 + 5612^2 .

It is a cyclic number.

It is not a de Polignac number, because 131434553 - 2⁸ = 131434297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (131434543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65717276 + 65717277.

It is an arithmetic number, because the mean of its divisors is an integer number (65717277).

Almost surely, 2^131434553 is an apocalyptic number.

It is an amenable number.

131434553 is a deficient number, since it is larger than the sum of its proper divisors (1).

131434553 is an equidigital number, since it uses as much as digits as its factorization.

131434553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 131434553 is about 11464.4909612246. The cubic root of 131434553 is about 508.4362624024.

Adding to 131434553 its reverse (355434131), we get a palindrome (486868684).

The spelling of 131434553 in words is "one hundred thirty-one million, four hundred thirty-four thousand, five hundred fifty-three".