731075413 has 6 divisors (see below), whose sum is σ = 757155074. Its totient is φ = 705865104.

The previous prime is 731075393. The next prime is 731075417. The reversal of 731075413 is 314570137.

It can be written as a sum of positive squares in 3 ways, for example, as 256576324 + 474499089 = 16018^2 + 21783^2 .

It is not a de Polignac number, because 731075413 - 2⁹ = 731074901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731075417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 433806 + ... + 435487.

Almost surely, 2^731075413 is an apocalyptic number.

It is an amenable number.

731075413 is a deficient number, since it is larger than the sum of its proper divisors (26079661).

731075413 is an equidigital number, since it uses as much as digits as its factorization.

731075413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869351 (or 869322 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 731075413 is about 27038.4062585057. The cubic root of 731075413 is about 900.8532702015.

The spelling of 731075413 in words is "seven hundred thirty-one million, seventy-five thousand, four hundred thirteen".