131323553 has 2 divisors, whose sum is σ = 131323554. Its totient is φ = 131323552.

The previous prime is 131323523. The next prime is 131323579. The reversal of 131323553 is 355323131.

It is an a-pointer prime, because the next prime (131323579) can be obtained adding 131323553 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123832384 + 7491169 = 11128^2 + 2737^2 .

It is a cyclic number.

It is not a de Polignac number, because 131323553 - 2¹⁸ = 131061409 is a prime.

It is not a weakly prime, because it can be changed into another prime (131323523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65661776 + 65661777.

It is an arithmetic number, because the mean of its divisors is an integer number (65661777).

Almost surely, 2^131323553 is an apocalyptic number.

It is an amenable number.

131323553 is a deficient number, since it is larger than the sum of its proper divisors (1).

131323553 is an equidigital number, since it uses as much as digits as its factorization.

131323553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4050, while the sum is 26.

The square root of 131323553 is about 11459.6489038714. The cubic root of 131323553 is about 508.2930927446.

Adding to 131323553 its reverse (355323131), we get a palindrome (486646684).

The spelling of 131323553 in words is "one hundred thirty-one million, three hundred twenty-three thousand, five hundred fifty-three".