219731097601 has 16 divisors (see below), whose sum is σ = 224499470400. Its totient is φ = 215002785600.

The previous prime is 219731097589. The next prime is 219731097631. The reversal of 219731097601 is 106790137912.

It is a cyclic number.

It is not a de Polignac number, because 219731097601 - 2²³ = 219722708993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219731097631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11328930 + ... + 11348308.

It is an arithmetic number, because the mean of its divisors is an integer number (14031216900).

Almost surely, 2^219731097601 is an apocalyptic number.

It is an amenable number.

219731097601 is a deficient number, since it is larger than the sum of its proper divisors (4768372799).

219731097601 is a wasteful number, since it uses less digits than its factorization.

219731097601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20400.

The product of its (nonzero) digits is 142884, while the sum is 46.

The spelling of 219731097601 in words is "two hundred nineteen billion, seven hundred thirty-one million, ninety-seven thousand, six hundred one".