131761393 has 2 divisors, whose sum is σ = 131761394. Its totient is φ = 131761392.

The previous prime is 131761379. The next prime is 131761397. The reversal of 131761393 is 393167131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131148304 + 613089 = 11452^2 + 783^2 .

It is a cyclic number.

It is not a de Polignac number, because 131761393 - 2⁵ = 131761361 is a prime.

It is a super-2 number, since 2×131761393² = 34722129370600898, which contains 22 as substring.

It is equal to p_7472518 and since 131761393 and 7472518 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 (131761397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65880696 + 65880697.

It is an arithmetic number, because the mean of its divisors is an integer number (65880697).

Almost surely, 2^131761393 is an apocalyptic number.

It is an amenable number.

131761393 is a deficient number, since it is larger than the sum of its proper divisors (1).

131761393 is an equidigital number, since it uses as much as digits as its factorization.

131761393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 34.

The square root of 131761393 is about 11478.7365593954. The cubic root of 131761393 is about 508.8573585528.

The spelling of 131761393 in words is "one hundred thirty-one million, seven hundred sixty-one thousand, three hundred ninety-three".