131456693 has 2 divisors, whose sum is σ = 131456694. Its totient is φ = 131456692.

The previous prime is 131456659. The next prime is 131456723. The reversal of 131456693 is 396654131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130827844 + 628849 = 11438^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 131456693 - 2¹⁸ = 131194549 is a prime.

It is a super-3 number, since 3×131456693³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131456093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65728346 + 65728347.

It is an arithmetic number, because the mean of its divisors is an integer number (65728347).

Almost surely, 2^131456693 is an apocalyptic number.

It is an amenable number.

131456693 is a deficient number, since it is larger than the sum of its proper divisors (1).

131456693 is an equidigital number, since it uses as much as digits as its factorization.

131456693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 38.

The square root of 131456693 is about 11465.4565107544. The cubic root of 131456693 is about 508.4648093017.

The spelling of 131456693 in words is "one hundred thirty-one million, four hundred fifty-six thousand, six hundred ninety-three".