313105412332421 has 4 divisors (see below), whose sum is σ = 313293238016352. Its totient is φ = 312917586648492.

The previous prime is 313105412332417. The next prime is 313105412332451. The reversal of 313105412332421 is 124233214501313.

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 313105412332421 - 2² = 313105412332417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313105412332451) 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, 93912839465 + ... + 93912842798.

It is an arithmetic number, because the mean of its divisors is an integer number (78323309504088).

Almost surely, 2^{313105412332421} is an apocalyptic number.

It is an amenable number.

313105412332421 is a deficient number, since it is larger than the sum of its proper divisors (187825683931).

313105412332421 is a wasteful number, since it uses less digits than its factorization.

313105412332421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187825683930.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 313105412332421 its reverse (124233214501313), we get a palindrome (437338626833734).

The spelling of 313105412332421 in words is "three hundred thirteen trillion, one hundred five billion, four hundred twelve million, three hundred thirty-two thousand, four hundred twenty-one".