2790031 has 4 divisors (see below), whose sum is σ = 2880064. Its totient is φ = 2700000.

The previous prime is 2790019. The next prime is 2790041. The reversal of 2790031 is 1300972.

2790031 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.

It is a 5-Lehmer number, since φ(2790031) divides (2790031-1)⁵.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2790031 is a prime.

It is a super-2 number, since 2×2790031² = 15568545961922, 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 = 2789984 and 2790011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2790001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44970 + ... + 45031.

It is an arithmetic number, because the mean of its divisors is an integer number (720016).

2^2790031 is an apocalyptic number.

2790031 is a deficient number, since it is larger than the sum of its proper divisors (90033).

2790031 is an equidigital number, since it uses as much as digits as its factorization.

2790031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90032.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 2790031 is about 1670.3385884305. The cubic root of 2790031 is about 140.7785030617.

It can be divided in two parts, 27900 and 31, that multiplied together give a square (864900 = 930²).

The spelling of 2790031 in words is "two million, seven hundred ninety thousand, thirty-one".