131356553 has 2 divisors, whose sum is σ = 131356554. Its totient is φ = 131356552.

The previous prime is 131356531. The next prime is 131356571. The reversal of 131356553 is 355653131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127870864 + 3485689 = 11308^2 + 1867^2 .

It is a cyclic number.

It is not a de Polignac number, because 131356553 - 2¹⁴ = 131340169 is a prime.

It is equal to p_7450826 and since 131356553 and 7450826 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (131356513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65678276 + 65678277.

It is an arithmetic number, because the mean of its divisors is an integer number (65678277).

Almost surely, 2^131356553 is an apocalyptic number.

It is an amenable number.

131356553 is a deficient number, since it is larger than the sum of its proper divisors (1).

131356553 is an equidigital number, since it uses as much as digits as its factorization.

131356553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20250, while the sum is 32.

The square root of 131356553 is about 11461.0886481172. The cubic root of 131356553 is about 508.3356651211.

The spelling of 131356553 in words is "one hundred thirty-one million, three hundred fifty-six thousand, five hundred fifty-three".