31313334213403 has 32 divisors (see below), whose sum is σ = 34902569779200. Its totient is φ = 27854379571200.

The previous prime is 31313334213389. The next prime is 31313334213509. The reversal of 31313334213403 is 30431243331313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31313334213403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31313334213703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1359133158 + ... + 1359156196.

It is an arithmetic number, because the mean of its divisors is an integer number (1090705305600).

Almost surely, 2^{31313334213403} is an apocalyptic number.

31313334213403 is a deficient number, since it is larger than the sum of its proper divisors (3589235565797).

31313334213403 is a wasteful number, since it uses less digits than its factorization.

31313334213403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37083.

The product of its (nonzero) digits is 69984, while the sum is 34.

Adding to 31313334213403 its reverse (30431243331313), we get a palindrome (61744577544716).

The spelling of 31313334213403 in words is "thirty-one trillion, three hundred thirteen billion, three hundred thirty-four million, two hundred thirteen thousand, four hundred three".