153240731032121 has 4 divisors (see below), whose sum is σ = 153297090259200. Its totient is φ = 153184371805044.

The previous prime is 153240731032057. The next prime is 153240731032223. The reversal of 153240731032121 is 121230137042351.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 153240731032121 - 2⁶ = 153240731032057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153240731034121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28179609461 + ... + 28179614898.

It is an arithmetic number, because the mean of its divisors is an integer number (38324272564800).

Almost surely, 2^{153240731032121} is an apocalyptic number.

It is an amenable number.

153240731032121 is a deficient number, since it is larger than the sum of its proper divisors (56359227079).

153240731032121 is an equidigital number, since it uses as much as digits as its factorization.

153240731032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56359227078.

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 153240731032121 its reverse (121230137042351), we get a palindrome (274470868074472).

The spelling of 153240731032121 in words is "one hundred fifty-three trillion, two hundred forty billion, seven hundred thirty-one million, thirty-two thousand, one hundred twenty-one".