31311201413 has 4 divisors (see below), whose sum is σ = 31339902048. Its totient is φ = 31282500780.

The previous prime is 31311201407. The next prime is 31311201421. The reversal of 31311201413 is 31410211313.

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 31311201413 - 2¹² = 31311197317 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 (31311201433) 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, 14348681 + ... + 14350862.

It is an arithmetic number, because the mean of its divisors is an integer number (7834975512).

Almost surely, 2^31311201413 is an apocalyptic number.

It is an amenable number.

31311201413 is a deficient number, since it is larger than the sum of its proper divisors (28700635).

31311201413 is a wasteful number, since it uses less digits than its factorization.

31311201413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28700634.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31311201413 its reverse (31410211313), we get a palindrome (62721412726).

The spelling of 31311201413 in words is "thirty-one billion, three hundred eleven million, two hundred one thousand, four hundred thirteen".