131403021011309 has 2 divisors, whose sum is σ = 131403021011310. Its totient is φ = 131403021011308.

The previous prime is 131403021011293. The next prime is 131403021011323. The reversal of 131403021011309 is 903110120304131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79400966561284 + 52002054450025 = 8910722^2 + 7211245^2 .

It is a cyclic number.

It is not a de Polignac number, because 131403021011309 - 2⁴ = 131403021011293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131403021011609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65701510505654 + 65701510505655.

It is an arithmetic number, because the mean of its divisors is an integer number (65701510505655).

Almost surely, 2^{131403021011309} is an apocalyptic number.

It is an amenable number.

131403021011309 is a deficient number, since it is larger than the sum of its proper divisors (1).

131403021011309 is an equidigital number, since it uses as much as digits as its factorization.

131403021011309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 131403021011309 in words is "one hundred thirty-one trillion, four hundred three billion, twenty-one million, eleven thousand, three hundred nine".