31434103213 has 4 divisors (see below), whose sum is σ = 31446664288. Its totient is φ = 31421542140.

The previous prime is 31434103133. The next prime is 31434103223. The reversal of 31434103213 is 31230143413.

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-31434103213 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 (31434103223) 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, 6276783 + ... + 6281788.

It is an arithmetic number, because the mean of its divisors is an integer number (7861666072).

Almost surely, 2^31434103213 is an apocalyptic number.

It is an amenable number.

31434103213 is a deficient number, since it is larger than the sum of its proper divisors (12561075).

31434103213 is a wasteful number, since it uses less digits than its factorization.

31434103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12561074.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31434103213 its reverse (31230143413), we get a palindrome (62664246626).

The spelling of 31434103213 in words is "thirty-one billion, four hundred thirty-four million, one hundred three thousand, two hundred thirteen".