50000031213 has 8 divisors (see below), whose sum is σ = 72727318176. Its totient is φ = 30303049200.

The previous prime is 50000031187. The next prime is 50000031217. The reversal of 50000031213 is 31213000005.

It is a happy number.

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

It is not a de Polignac number, because 50000031213 - 2⁶ = 50000031149 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 50000031192 and 50000031201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50000031217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757576198 + ... + 757576263.

It is an arithmetic number, because the mean of its divisors is an integer number (9090914772).

Almost surely, 2^50000031213 is an apocalyptic number.

It is an amenable number.

50000031213 is a deficient number, since it is larger than the sum of its proper divisors (22727286963).

50000031213 is a wasteful number, since it uses less digits than its factorization.

50000031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515152475.

The product of its (nonzero) digits is 90, while the sum is 15.

Adding to 50000031213 its reverse (31213000005), we get a palindrome (81213031218).

The spelling of 50000031213 in words is "fifty billion, thirty-one thousand, two hundred thirteen".