961303531 has 2 divisors, whose sum is σ = 961303532. Its totient is φ = 961303530.

The previous prime is 961303523. The next prime is 961303597. The reversal of 961303531 is 135303169.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 961303531 - 2³ = 961303523 is a prime.

It is a super-2 number, since 2×961303531² = 1848208957426135922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 961303493 and 961303502.

It is not a weakly prime, because it can be changed into another prime (961303501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480651765 + 480651766.

It is an arithmetic number, because the mean of its divisors is an integer number (480651766).

Almost surely, 2^961303531 is an apocalyptic number.

961303531 is a deficient number, since it is larger than the sum of its proper divisors (1).

961303531 is an equidigital number, since it uses as much as digits as its factorization.

961303531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 961303531 is about 31004.8952747788. The cubic root of 961303531 is about 986.9311255556.

The spelling of 961303531 in words is "nine hundred sixty-one million, three hundred three thousand, five hundred thirty-one".