2864781031 has 48 divisors (see below), whose sum is σ = 3680467200. Its totient is φ = 2212987392.

The previous prime is 2864781019. The next prime is 2864781043. The reversal of 2864781031 is 1301874682.

2864781031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2864781019) and next prime (2864781043).

It is not a de Polignac number, because 2864781031 - 2⁷ = 2864780903 is a prime.

It is a super-2 number, since 2×2864781031² = 16413940711154845922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2864781001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7558600 + ... + 7558978.

It is an arithmetic number, because the mean of its divisors is an integer number (76676400).

Almost surely, 2^2864781031 is an apocalyptic number.

2864781031 is a deficient number, since it is larger than the sum of its proper divisors (815686169).

2864781031 is a wasteful number, since it uses less digits than its factorization.

2864781031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 2864781031 is about 53523.6492683374. The cubic root of 2864781031 is about 1420.2467717329.

The spelling of 2864781031 in words is "two billion, eight hundred sixty-four million, seven hundred eighty-one thousand, thirty-one".