215341961 has 8 divisors (see below), whose sum is σ = 222144960. Its totient is φ = 208590768.

The previous prime is 215341937. The next prime is 215341967. The reversal of 215341961 is 169143512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215341961 - 2¹⁴ = 215325577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215341967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4421 + ... + 21218.

It is an arithmetic number, because the mean of its divisors is an integer number (27768120).

Almost surely, 2^215341961 is an apocalyptic number.

It is an amenable number.

215341961 is a deficient number, since it is larger than the sum of its proper divisors (6802999).

215341961 is a wasteful number, since it uses less digits than its factorization.

215341961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25903.

The product of its digits is 6480, while the sum is 32.

The square root of 215341961 is about 14674.5344389524. The cubic root of 215341961 is about 599.3900848456.

The spelling of 215341961 in words is "two hundred fifteen million, three hundred forty-one thousand, nine hundred sixty-one".