308614691961 has 9 divisors (see below), whose sum is σ = 445779184591. Its totient is φ = 205742016912.

The previous prime is 308614691939. The next prime is 308614691989. The reversal of 308614691961 is 169196416803.

It is a happy number.

The square root of 308614691961 is 555531.

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

308614691961 is a `hidden beast` number, since 3 + 0 + 8 + 614 + 6 + 9 + 19 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 124182236025 + 184432455936 = 352395^2 + 429456^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 308614691961 - 2⁵ = 308614691929 is a prime.

It is a super-3 number, since 3×308614691961³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 308614691898 and 308614691907.

It is not an unprimeable number, because it can be changed into a prime (308614691921) 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, 1574005 + ... + 1759181.

Almost surely, 2^308614691961 is an apocalyptic number.

308614691961 is the 555531-st square number.

308614691961 is the 277766-th centered octagonal number.

It is an amenable number.

308614691961 is a deficient number, since it is larger than the sum of its proper divisors (137164492630).

308614691961 is an frugal number, since it uses more digits than its factorization.

308614691961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370360 (or 185180 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 308614691961 in words is "three hundred eight billion, six hundred fourteen million, six hundred ninety-one thousand, nine hundred sixty-one".