137321023 has 8 divisors (see below), whose sum is σ = 161180192. Its totient is φ = 114522336.

The previous prime is 137321021. The next prime is 137321027. The reversal of 137321023 is 320123731.

It is a happy number.

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 137321023 - 2¹ = 137321021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137320985 and 137321003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137321021) 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, 264840 + ... + 265357.

It is an arithmetic number, because the mean of its divisors is an integer number (20147524).

Almost surely, 2^137321023 is an apocalyptic number.

137321023 is a deficient number, since it is larger than the sum of its proper divisors (23859169).

137321023 is an equidigital number, since it uses as much as digits as its factorization.

137321023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530241.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 137321023 is about 11718.4053095974. The cubic root of 137321023 is about 515.9160157668.

Adding to 137321023 its reverse (320123731), we get a palindrome (457444754).

The spelling of 137321023 in words is "one hundred thirty-seven million, three hundred twenty-one thousand, twenty-three".