900081023 has 4 divisors (see below), whose sum is σ = 902431488. Its totient is φ = 897730560.

The previous prime is 900081019. The next prime is 900081041. The reversal of 900081023 is 320180009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320180009 = 5651 ⋅56659.

It is a cyclic number.

It is not a de Polignac number, because 900081023 - 2² = 900081019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 900081023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900081223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174658 + ... + 1175423.

It is an arithmetic number, because the mean of its divisors is an integer number (225607872).

Almost surely, 2^900081023 is an apocalyptic number.

900081023 is a deficient number, since it is larger than the sum of its proper divisors (2350465).

900081023 is a wasteful number, since it uses less digits than its factorization.

900081023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350464.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 900081023 is about 30001.3503529424. The cubic root of 900081023 is about 965.5183566423.

The spelling of 900081023 in words is "nine hundred million, eighty-one thousand, twenty-three".