900992031 has 4 divisors (see below), whose sum is σ = 1201322712. Its totient is φ = 600661352.

The previous prime is 900991963. The next prime is 900992033. The reversal of 900992031 is 130299009.

900992031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130299009 = 3 ⋅43433003.

It is a cyclic number.

It is not a de Polignac number, because 900992031 - 2⁹ = 900991519 is a prime.

It is a super-2 number, since 2×900992031² = 1623573279851009922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 900991983 and 900992001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900992033) 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, 150165336 + ... + 150165341.

It is an arithmetic number, because the mean of its divisors is an integer number (300330678).

Almost surely, 2^900992031 is an apocalyptic number.

900992031 is a deficient number, since it is larger than the sum of its proper divisors (300330681).

900992031 is a wasteful number, since it uses less digits than its factorization.

900992031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300330680.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 900992031 is about 30016.5292963727. The cubic root of 900992031 is about 965.8439933845.

The spelling of 900992031 in words is "nine hundred million, nine hundred ninety-two thousand, thirty-one".