731975047 has 2 divisors, whose sum is σ = 731975048. Its totient is φ = 731975046.

The previous prime is 731975029. The next prime is 731975099. The reversal of 731975047 is 740579137.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 731975047 - 2¹⁵ = 731942279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 731974994 and 731975012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (731975147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365987523 + 365987524.

It is an arithmetic number, because the mean of its divisors is an integer number (365987524).

Almost surely, 2^731975047 is an apocalyptic number.

731975047 is a deficient number, since it is larger than the sum of its proper divisors (1).

731975047 is an equidigital number, since it uses as much as digits as its factorization.

731975047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 731975047 is about 27055.0373682980. The cubic root of 731975047 is about 901.2226374888. Note that the first 3 decimals are identical.

The spelling of 731975047 in words is "seven hundred thirty-one million, nine hundred seventy-five thousand, forty-seven".