3123803881 has 9 divisors (see below), whose sum is σ = 3434278519. Its totient is φ = 2839262800.

The previous prime is 3123803867. The next prime is 3123803897. The reversal of 3123803881 is 1883083213.

The square root of 3123803881 is 55891.

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

It can be written as a sum of positive squares in only one way, i.e., 428117481 + 2695686400 = 20691^2 + 51920^2 .

It is not a de Polignac number, because 3123803881 - 2⁹ = 3123803369 is a prime.

It is a super-2 number, since 2×3123803881² = 19516301373901324322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3123803881.

It is not an unprimeable number, because it can be changed into a prime (3123807881) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 612261 + ... + 617341.

Almost surely, 2^3123803881 is an apocalyptic number.

3123803881 is the 55891-st square number.

3123803881 is the 27946-th centered octagonal number.

It is an amenable number.

3123803881 is a deficient number, since it is larger than the sum of its proper divisors (310474638).

3123803881 is an frugal number, since it uses more digits than its factorization.

3123803881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10184 (or 5092 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The cubic root of 3123803881 is about 1461.8223133999.

The spelling of 3123803881 in words is "three billion, one hundred twenty-three million, eight hundred three thousand, eight hundred eighty-one".