131622499 has 2 divisors, whose sum is σ = 131622500. Its totient is φ = 131622498.

The previous prime is 131622473. The next prime is 131622509. The reversal of 131622499 is 994226131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131622499 - 2⁵ = 131622467 is a prime.

It is not a weakly prime, because it can be changed into another prime (131622409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65811249 + 65811250.

It is an arithmetic number, because the mean of its divisors is an integer number (65811250).

Almost surely, 2^131622499 is an apocalyptic number.

131622499 is a deficient number, since it is larger than the sum of its proper divisors (1).

131622499 is an equidigital number, since it uses as much as digits as its factorization.

131622499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 131622499 is about 11472.6849080762. The cubic root of 131622499 is about 508.6784946198.

The spelling of 131622499 in words is "one hundred thirty-one million, six hundred twenty-two thousand, four hundred ninety-nine".