3131014221 has 6 divisors (see below), whose sum is σ = 4522576110. Its totient is φ = 2087342808.

The previous prime is 3131014217. The next prime is 3131014223. The reversal of 3131014221 is 1224101313.

It can be written as a sum of positive squares in only one way, i.e., 2951748900 + 179265321 = 54330^2 + 13389^2 .

It is not a de Polignac number, because 3131014221 - 2² = 3131014217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3131014194 and 3131014203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131014223) 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, 173945226 + ... + 173945243.

It is an arithmetic number, because the mean of its divisors is an integer number (753762685).

Almost surely, 2^3131014221 is an apocalyptic number.

It is an amenable number.

3131014221 is a deficient number, since it is larger than the sum of its proper divisors (1391561889).

3131014221 is a wasteful number, since it uses less digits than its factorization.

3131014221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347890475 (or 347890472 counting only the distinct ones).

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

The square root of 3131014221 is about 55955.4664085646. The cubic root of 3131014221 is about 1462.9461714753.

Adding to 3131014221 its reverse (1224101313), we get a palindrome (4355115534).

The spelling of 3131014221 in words is "three billion, one hundred thirty-one million, fourteen thousand, two hundred twenty-one".