1020314881 has 4 divisors (see below), whose sum is σ = 1021102852. Its totient is φ = 1019526912.

The previous prime is 1020314843. The next prime is 1020314887. The reversal of 1020314881 is 1884130201.

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 822771856 + 197543025 = 28684^2 + 14055^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020314881 - 2⁹ = 1020314369 is a prime.

It is a super-3 number, since 3×1020314881³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020314887) 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, 392040 + ... + 394633.

It is an arithmetic number, because the mean of its divisors is an integer number (255275713).

Almost surely, 2^1020314881 is an apocalyptic number.

It is an amenable number.

1020314881 is a deficient number, since it is larger than the sum of its proper divisors (787971).

1020314881 is an equidigital number, since it uses as much as digits as its factorization.

1020314881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787970.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1020314881 is about 31942.3681182219. The cubic root of 1020314881 is about 1006.7262826825.

The spelling of 1020314881 in words is "one billion, twenty million, three hundred fourteen thousand, eight hundred eighty-one".