920488031 has 4 divisors (see below), whose sum is σ = 929424912. Its totient is φ = 911551152.

The previous prime is 920487947. The next prime is 920488099. The reversal of 920488031 is 130884029.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920488031 is a prime.

It is a super-2 number, since 2×920488031² = 1694596430428513922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 920487982 and 920488000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920484031) 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, 4468286 + ... + 4468491.

It is an arithmetic number, because the mean of its divisors is an integer number (232356228).

Almost surely, 2^920488031 is an apocalyptic number.

920488031 is a deficient number, since it is larger than the sum of its proper divisors (8936881).

920488031 is a wasteful number, since it uses less digits than its factorization.

920488031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8936880.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 920488031 is about 30339.5456623859. The cubic root of 920488031 is about 972.7607717234.

The spelling of 920488031 in words is "nine hundred twenty million, four hundred eighty-eight thousand, thirty-one".