121430031313 has 4 divisors (see below), whose sum is σ = 121433836608. Its totient is φ = 121426226020.

The previous prime is 121430031299. The next prime is 121430031337. The reversal of 121430031313 is 313130034121.

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 a de Polignac number, because none of the positive numbers 2^k-121430031313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121430031353) 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, 1854373 + ... + 1918738.

It is an arithmetic number, because the mean of its divisors is an integer number (30358459152).

Almost surely, 2^121430031313 is an apocalyptic number.

It is an amenable number.

121430031313 is a deficient number, since it is larger than the sum of its proper divisors (3805295).

121430031313 is an equidigital number, since it uses as much as digits as its factorization.

121430031313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805294.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 121430031313 its reverse (313130034121), we get a palindrome (434560065434).

The spelling of 121430031313 in words is "one hundred twenty-one billion, four hundred thirty million, thirty-one thousand, three hundred thirteen".