90811023 has 8 divisors (see below), whose sum is σ = 124034736. Its totient is φ = 59064000.

The previous prime is 90810989. The next prime is 90811057. The reversal of 90811023 is 32011809.

It is an interprime number because it is at equal distance from previous prime (90810989) and next prime (90811057).

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

It is not a de Polignac number, because 90811023 - 2⁶ = 90810959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90810984 and 90811002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90811073) 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, 369028 + ... + 369273.

It is an arithmetic number, because the mean of its divisors is an integer number (15504342).

Almost surely, 2^90811023 is an apocalyptic number.

90811023 is a deficient number, since it is larger than the sum of its proper divisors (33223713).

90811023 is a wasteful number, since it uses less digits than its factorization.

90811023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738345.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 90811023 is about 9529.4817802439. The cubic root of 90811023 is about 449.4825706977.

The spelling of 90811023 in words is "ninety million, eight hundred eleven thousand, twenty-three".