245231343121 has 4 divisors (see below), whose sum is σ = 246163781952. Its totient is φ = 244298904292.

The previous prime is 245231343031. The next prime is 245231343131. The reversal of 245231343121 is 121343132542.

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 245231343121 - 2¹⁵ = 245231310353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245231343131) 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, 466219021 + ... + 466219546.

It is an arithmetic number, because the mean of its divisors is an integer number (61540945488).

Almost surely, 2^245231343121 is an apocalyptic number.

It is an amenable number.

245231343121 is a deficient number, since it is larger than the sum of its proper divisors (932438831).

245231343121 is an equidigital number, since it uses as much as digits as its factorization.

245231343121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932438830.

The product of its digits is 17280, while the sum is 31.

Adding to 245231343121 its reverse (121343132542), we get a palindrome (366574475663).

The spelling of 245231343121 in words is "two hundred forty-five billion, two hundred thirty-one million, three hundred forty-three thousand, one hundred twenty-one".