13061961 has 12 divisors (see below), whose sum is σ = 20582640. Its totient is φ = 7916280.

The previous prime is 13061957. The next prime is 13062017. The reversal of 13061961 is 16916031.

It is not a de Polignac number, because 13061961 - 2² = 13061957 is a prime.

It is a super-2 number, since 2×13061961² = 341229650331042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13061921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65871 + ... + 66068.

It is an arithmetic number, because the mean of its divisors is an integer number (1715220).

Almost surely, 2^13061961 is an apocalyptic number.

13061961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13061961 is a deficient number, since it is larger than the sum of its proper divisors (7520679).

13061961 is a wasteful number, since it uses less digits than its factorization.

13061961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131956 (or 131953 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 13061961 is about 3614.1335061118. The cubic root of 13061961 is about 235.5064436280.

Adding to 13061961 its reverse (16916031), we get a palindrome (29977992).

The spelling of 13061961 in words is "thirteen million, sixty-one thousand, nine hundred sixty-one".