980315831881 has 45 divisors (see below), whose sum is σ = 1095805592865. Its totient is φ = 876840530400.

The previous prime is 980315831867. The next prime is 980315831899. The reversal of 980315831881 is 188138513089.

It is a happy number.

The square root of 980315831881 is 990109.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 800471985481 + 179843846400 = 894691^2 + 424080^2 .

It is not a de Polignac number, because 980315831881 - 2⁷ = 980315831753 is a prime.

It is a super-2 number, since 2×980315831881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980315831851) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 23910142221 + ... + 23910142261.

It is an arithmetic number, because the mean of its divisors is an integer number (24351235397).

Almost surely, 2^980315831881 is an apocalyptic number.

980315831881 is the 990109-th square number.

980315831881 is the 495055-th centered octagonal number.

It is an amenable number.

980315831881 is a deficient number, since it is larger than the sum of its proper divisors (115489760984).

980315831881 is an frugal number, since it uses more digits than its factorization.

980315831881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 55.

The spelling of 980315831881 in words is "nine hundred eighty billion, three hundred fifteen million, eight hundred thirty-one thousand, eight hundred eighty-one".