31212141343 has 4 divisors (see below), whose sum is σ = 31282598088. Its totient is φ = 31141684600.

The previous prime is 31212141251. The next prime is 31212141349. The reversal of 31212141343 is 34314121213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31212141343 - 2⁹ = 31212140831 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 (31212141349) 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, 35227708 + ... + 35228593.

It is an arithmetic number, because the mean of its divisors is an integer number (7820649522).

Almost surely, 2^31212141343 is an apocalyptic number.

31212141343 is a deficient number, since it is larger than the sum of its proper divisors (70456745).

31212141343 is an equidigital number, since it uses as much as digits as its factorization.

31212141343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70456744.

The product of its digits is 1728, while the sum is 25.

Adding to 31212141343 its reverse (34314121213), we get a palindrome (65526262556).

The spelling of 31212141343 in words is "thirty-one billion, two hundred twelve million, one hundred forty-one thousand, three hundred forty-three".