31314121413 has 4 divisors (see below), whose sum is σ = 41752161888. Its totient is φ = 20876080940.

The previous prime is 31314121409. The next prime is 31314121463. The reversal of 31314121413 is 31412141313.

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 31314121413 - 2² = 31314121409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31314121463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5219020233 + ... + 5219020238.

It is an arithmetic number, because the mean of its divisors is an integer number (10438040472).

Almost surely, 2^31314121413 is an apocalyptic number.

It is an amenable number.

31314121413 is a deficient number, since it is larger than the sum of its proper divisors (10438040475).

31314121413 is a wasteful number, since it uses less digits than its factorization.

31314121413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10438040474.

The product of its digits is 864, while the sum is 24.

Adding to 31314121413 its reverse (31412141313), we get a palindrome (62726262726).

The spelling of 31314121413 in words is "thirty-one billion, three hundred fourteen million, one hundred twenty-one thousand, four hundred thirteen".