77031043 has 4 divisors (see below), whose sum is σ = 77052960. Its totient is φ = 77009128.

The previous prime is 77031041. The next prime is 77031067. The reversal of 77031043 is 34013077.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 77031043 - 2¹ = 77031041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77030999 and 77031017.

It is not an unprimeable number, because it can be changed into a prime (77031041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4363 + ... + 13156.

It is an arithmetic number, because the mean of its divisors is an integer number (19263240).

Almost surely, 2^77031043 is an apocalyptic number.

77031043 is a deficient number, since it is larger than the sum of its proper divisors (21917).

77031043 is a wasteful number, since it uses less digits than its factorization.

77031043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21916.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 77031043 is about 8776.7330482361. The cubic root of 77031043 is about 425.4892506408.

It can be divided in two parts, 770 and 31043, that added together give a palindrome (31813).

The spelling of 77031043 in words is "seventy-seven million, thirty-one thousand, forty-three".