131517293 has 2 divisors, whose sum is σ = 131517294. Its totient is φ = 131517292.

The previous prime is 131517247. The next prime is 131517317. The reversal of 131517293 is 392715131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86062729 + 45454564 = 9277^2 + 6742^2 .

It is a cyclic number.

It is not a de Polignac number, because 131517293 - 2¹⁰ = 131516269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131517193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65758646 + 65758647.

It is an arithmetic number, because the mean of its divisors is an integer number (65758647).

Almost surely, 2^131517293 is an apocalyptic number.

It is an amenable number.

131517293 is a deficient number, since it is larger than the sum of its proper divisors (1).

131517293 is an equidigital number, since it uses as much as digits as its factorization.

131517293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 32.

The square root of 131517293 is about 11468.0989270236. The cubic root of 131517293 is about 508.5429294114.

The spelling of 131517293 in words is "one hundred thirty-one million, five hundred seventeen thousand, two hundred ninety-three".