31222029 has 8 divisors (see below), whose sum is σ = 42041952. Its totient is φ = 20608400.

The previous prime is 31222021. The next prime is 31222091. The reversal of 31222029 is 92022213.

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

It is a cyclic number.

It is not a de Polignac number, because 31222029 - 2³ = 31222021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31221996 and 31222014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51219 + ... + 51824.

It is an arithmetic number, because the mean of its divisors is an integer number (5255244).

Almost surely, 2^31222029 is an apocalyptic number.

It is an amenable number.

31222029 is a deficient number, since it is larger than the sum of its proper divisors (10819923).

31222029 is a wasteful number, since it uses less digits than its factorization.

31222029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103147.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 31222029 is about 5587.6675813796. The cubic root of 31222029 is about 314.8862577500.

It can be divided in two parts, 3122 and 2029, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 31222029 in words is "thirty-one million, two hundred twenty-two thousand, twenty-nine".