21829031097 has 8 divisors (see below), whose sum is σ = 29106883200. Its totient is φ = 14551933200.

The previous prime is 21829031069. The next prime is 21829031117. The reversal of 21829031097 is 79013092812.

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

It is not a de Polignac number, because 21829031097 - 2²³ = 21820642489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21829031027) 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, 117154 + ... + 239547.

It is an arithmetic number, because the mean of its divisors is an integer number (3638360400).

Almost surely, 2^21829031097 is an apocalyptic number.

It is an amenable number.

21829031097 is a deficient number, since it is larger than the sum of its proper divisors (7277852103).

21829031097 is a wasteful number, since it uses less digits than its factorization.

21829031097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377103.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 21829031097 in words is "twenty-one billion, eight hundred twenty-nine million, thirty-one thousand, ninety-seven".