920231011 has 4 divisors (see below), whose sum is σ = 1051692592. Its totient is φ = 788769432.

The previous prime is 920230973. The next prime is 920231027. The reversal of 920231011 is 110132029.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 920231011 - 2²⁹ = 383360099 is a prime.

It is a super-2 number, since 2×920231011² = 1693650227212164242, which contains 22 as substring.

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 920231011.

It is not an unprimeable number, because it can be changed into a prime (920231911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65730780 + ... + 65730793.

It is an arithmetic number, because the mean of its divisors is an integer number (262923148).

Almost surely, 2^920231011 is an apocalyptic number.

920231011 is a deficient number, since it is larger than the sum of its proper divisors (131461581).

920231011 is a wasteful number, since it uses less digits than its factorization.

920231011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131461580.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 920231011 is about 30335.3096407470. The cubic root of 920231011 is about 972.6702247386.

The spelling of 920231011 in words is "nine hundred twenty million, two hundred thirty-one thousand, eleven".