90531723 has 8 divisors (see below), whose sum is σ = 120756736. Its totient is φ = 60330600.

The previous prime is 90531719. The next prime is 90531743. The reversal of 90531723 is 32713509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90531723 - 2² = 90531719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90531743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6738 + ... + 15048.

It is an arithmetic number, because the mean of its divisors is an integer number (15094592).

Almost surely, 2^90531723 is an apocalyptic number.

90531723 is a deficient number, since it is larger than the sum of its proper divisors (30225013).

90531723 is a wasteful number, since it uses less digits than its factorization.

90531723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11945.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 90531723 is about 9514.8159729971. The cubic root of 90531723 is about 449.0212852610.

The spelling of 90531723 in words is "ninety million, five hundred thirty-one thousand, seven hundred twenty-three".