20233531097 has 8 divisors (see below), whose sum is σ = 21791067144. Its totient is φ = 18676153728.

The previous prime is 20233531093. The next prime is 20233531147. The reversal of 20233531097 is 79013533202.

It can be written as a sum of positive squares in 4 ways, for example, as 175561 + 20233355536 = 419^2 + 142244^2 .

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 20233531097 - 2² = 20233531093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20233531093) 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 in 7 ways as a sum of consecutive naturals, for example, 440573 + ... + 484325.

It is an arithmetic number, because the mean of its divisors is an integer number (2723883393).

Almost surely, 2^20233531097 is an apocalyptic number.

It is an amenable number.

20233531097 is a deficient number, since it is larger than the sum of its proper divisors (1557536047).

20233531097 is a wasteful number, since it uses less digits than its factorization.

20233531097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79339.

The product of its (nonzero) digits is 34020, while the sum is 35.

The spelling of 20233531097 in words is "twenty billion, two hundred thirty-three million, five hundred thirty-one thousand, ninety-seven".