2031382985 has 4 divisors (see below), whose sum is σ = 2437659588. Its totient is φ = 1625106384.

The previous prime is 2031382963. The next prime is 2031382987. The reversal of 2031382985 is 5892831302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1101376969 + 930006016 = 33187^2 + 30496^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031382985 - 2¹² = 2031378889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031382987) 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, 203138294 + ... + 203138303.

It is an arithmetic number, because the mean of its divisors is an integer number (609414897).

Almost surely, 2^2031382985 is an apocalyptic number.

It is an amenable number.

2031382985 is a deficient number, since it is larger than the sum of its proper divisors (406276603).

2031382985 is an equidigital number, since it uses as much as digits as its factorization.

2031382985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406276602.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 2031382985 is about 45070.8662552652. The cubic root of 2031382985 is about 1266.4768921215.

The spelling of 2031382985 in words is "two billion, thirty-one million, three hundred eighty-two thousand, nine hundred eighty-five".