123473491 has 2 divisors, whose sum is σ = 123473492. Its totient is φ = 123473490.

The previous prime is 123473479. The next prime is 123473521. The reversal of 123473491 is 194374321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123473491 - 2¹³ = 123465299 is a prime.

It is not a weakly prime, because it can be changed into another prime (123473401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61736745 + 61736746.

It is an arithmetic number, because the mean of its divisors is an integer number (61736746).

Almost surely, 2^123473491 is an apocalyptic number.

123473491 is a deficient number, since it is larger than the sum of its proper divisors (1).

123473491 is an equidigital number, since it uses as much as digits as its factorization.

123473491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 123473491 is about 11111.8626251408. The cubic root of 123473491 is about 497.9563127324.

The spelling of 123473491 in words is "one hundred twenty-three million, four hundred seventy-three thousand, four hundred ninety-one".