3131021214 has 12 divisors (see below), whose sum is σ = 6783879336. Its totient is φ = 1043673732.

The previous prime is 3131021213. The next prime is 3131021227. The reversal of 3131021214 is 4121201313.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 173945623 = 3131021214 / (3 + 1 + 3 + 1 + 0 + 2 + 1 + 2 + 1 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131021213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86972794 + ... + 86972829.

It is an arithmetic number, because the mean of its divisors is an integer number (565323278).

Almost surely, 2^3131021214 is an apocalyptic number.

3131021214 is an abundant number, since it is smaller than the sum of its proper divisors (3652858122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131021214 is a wasteful number, since it uses less digits than its factorization.

3131021214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173945631 (or 173945628 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 3131021214 is about 55955.5288957222. The cubic root of 3131021214 is about 1462.9472606191.

Adding to 3131021214 its reverse (4121201313), we get a palindrome (7252222527).

The spelling of 3131021214 in words is "three billion, one hundred thirty-one million, twenty-one thousand, two hundred fourteen".