201309231023 has 8 divisors (see below), whose sum is σ = 201468084048. Its totient is φ = 201150428544.

The previous prime is 201309231017. The next prime is 201309231043. The reversal of 201309231023 is 320132903102.

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 201309231023 - 2¹⁶ = 201309165487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201309230983 and 201309231001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201309231043) 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, 12362615 + ... + 12378887.

It is an arithmetic number, because the mean of its divisors is an integer number (25183510506).

Almost surely, 2^201309231023 is an apocalyptic number.

201309231023 is a deficient number, since it is larger than the sum of its proper divisors (158853025).

201309231023 is a wasteful number, since it uses less digits than its factorization.

201309231023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25273.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 201309231023 in words is "two hundred one billion, three hundred nine million, two hundred thirty-one thousand, twenty-three".