31423131213 has 8 divisors (see below), whose sum is σ = 41919417408. Its totient is φ = 20937799584.

The previous prime is 31423131197. The next prime is 31423131217. The reversal of 31423131213 is 31213132413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31423131213 - 2⁴ = 31423131197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423131217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2731945 + ... + 2743422.

It is an arithmetic number, because the mean of its divisors is an integer number (5239927176).

Almost surely, 2^31423131213 is an apocalyptic number.

It is an amenable number.

31423131213 is a deficient number, since it is larger than the sum of its proper divisors (10496286195).

31423131213 is a wasteful number, since it uses less digits than its factorization.

31423131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5477283.

The product of its digits is 1296, while the sum is 24.

Adding to 31423131213 its reverse (31213132413), we get a palindrome (62636263626).

The spelling of 31423131213 in words is "thirty-one billion, four hundred twenty-three million, one hundred thirty-one thousand, two hundred thirteen".