1020311047 has 4 divisors (see below), whose sum is σ = 1166069776. Its totient is φ = 874552320.

The previous prime is 1020311023. The next prime is 1020311057. The reversal of 1020311047 is 7401130201.

1020311047 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: 7401130201 = 43 ⋅172119307.

It is a cyclic number.

It is not a de Polignac number, because 1020311047 - 2¹⁵ = 1020278279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020311057) 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, 72879354 + ... + 72879367.

It is an arithmetic number, because the mean of its divisors is an integer number (291517444).

Almost surely, 2^1020311047 is an apocalyptic number.

1020311047 is a deficient number, since it is larger than the sum of its proper divisors (145758729).

1020311047 is an equidigital number, since it uses as much as digits as its factorization.

1020311047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145758728.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1020311047 is about 31942.3081038299. The cubic root of 1020311047 is about 1006.7250217014.

Adding to 1020311047 its reverse (7401130201), we get a palindrome (8421441248).

The spelling of 1020311047 in words is "one billion, twenty million, three hundred eleven thousand, forty-seven".