961272287 has 2 divisors, whose sum is σ = 961272288. Its totient is φ = 961272286.

The previous prime is 961272283. The next prime is 961272313. The reversal of 961272287 is 782272169.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 961272287 - 2² = 961272283 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961272283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480636143 + 480636144.

It is an arithmetic number, because the mean of its divisors is an integer number (480636144).

Almost surely, 2^961272287 is an apocalyptic number.

961272287 is a deficient number, since it is larger than the sum of its proper divisors (1).

961272287 is an equidigital number, since it uses as much as digits as its factorization.

961272287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 961272287 is about 31004.3914147657. The cubic root of 961272287 is about 986.9204331263.

The spelling of 961272287 in words is "nine hundred sixty-one million, two hundred seventy-two thousand, two hundred eighty-seven".