302740947961 has 9 divisors (see below), whose sum is σ = 312839437743. Its totient is φ = 292958604360.

The previous prime is 302740947947. The next prime is 302740947973. The reversal of 302740947961 is 169749047203.

The square root of 302740947961 is 550219.

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., 17777155561 + 284963792400 = 133331^2 + 533820^2 .

It is not a de Polignac number, because 302740947961 - 2⁹ = 302740947449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 302740947899 and 302740947908.

It is not an unprimeable number, because it can be changed into a prime (302740947911) 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, 17047915 + ... + 17065663.

It is an arithmetic number, because the mean of its divisors is an integer number (34759937527).

Almost surely, 2^302740947961 is an apocalyptic number.

302740947961 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

302740947961 is the 550219-th square number.

302740947961 is the 275110-th centered octagonal number.

It is an amenable number.

302740947961 is a deficient number, since it is larger than the sum of its proper divisors (10098489782).

302740947961 is an frugal number, since it uses more digits than its factorization.

302740947961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35560 (or 17780 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 302740947961 in words is "three hundred two billion, seven hundred forty million, nine hundred forty-seven thousand, nine hundred sixty-one".